1. Which of these characteristics would classify an introduced species as being invasive?
A. They can be grown easily
B. They have many natural predators
C. They take away resources from native organisms
D. They tend to not survive well with changes to a new environment
Answers
Answer:
A
Explanation:
A species is said to be invasive when the rate at which it is spreading and multiplying is higher than expected causing a negative effect on the natives of the habitat
Related Questions
Which of the following controls what enters or exits a cell?
· Cell wall
· Cell membrane
· Chloroplast
· Ribosomes
Answers
Answer:
Cell membrane
Explanation: I learned all about what a cell is made up of in school.
cells perform catabolism to generate atp, which can be used for all of the following except cells perform catabolism to generate atp, which can be used for all of the following except ion transport. protein synthesis. glycogen synthesis. muscle contraction. diffusion.
Answers
Cells perform catabolism to generate ATP, which can be used for all of the following except glycogen synthesis.
ATP (adenosine triphosphate) is the primary energy currency of the cell and is generated through cellular respiration, which involves the breakdown of glucose or other organic molecules. ATP is used by the cell for a variety of energy-requiring processes, such as muscle contraction, active transport of ions and molecules across membranes, synthesis of biomolecules like proteins and nucleic acids, and maintenance of cellular homeostasis.
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2. Consider an organism that has two pairs of homologous chromosomes in each of its diploid (2n) somatic cells. How many chromosomes would the organism’s cell have during each of the following stages?
Answers
The number of chromosomes in an organism's cell varies depending on the stage of the cell cycle. However, in an organism with two pairs of homologous chromosomes in each of its diploid (2n) somatic cells.
During the different stages of the cell cycle, the number of chromosomes in the cell of an organism with two pairs of homologous chromosomes in each of its diploid (2n) somatic cells can be determined as follows:
Interphase: During interphase, the cell grows and prepares for cell division. At this stage, the cell has 2n = 4 chromosomes, as each homologous chromosome pair is replicated during the S-phase of interphase.
Prophase: During prophase, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the spindle fibers begin to form. At this stage, the cell has 2n = 4 chromosomes.
Metaphase: During metaphase, the chromosomes align at the equator of the cell and are attached to the spindle fibers. At this stage, the cell has 2n = 4 chromosomes.
Anaphase: During anaphase, the spindle fibers pull the chromosomes apart, and the sister chromatids move towards opposite poles of the cell. At this stage, the cell has 4n = 8 chromosomes, as the homologous chromosomes have separated into individual sister chromatids.
Telophase: During telophase, the nuclear envelope reforms around the separated chromatids, the spindle fibers disassemble, and the chromatin begins to decondense. At this stage, the cell has 4n = 8 chromosomes.
Cytokinesis: During cytokinesis, the cell divides into two daughter cells. At this stage, each daughter cell has 2n = 4 chromosomes, as at the beginning of the cycle.
The total number of chromosomes during the cell cycle ranges from 2n = 4 to 4n = 8.
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amino acids that are far apart in the amino acid sequence of an enzyme can be essential for the enzyme's catalytic activity. what does this suggest about the enzyme's active site? (select all that apply.) the enzyme's active site may be buried deep inside the enzyme's interior. this result suggests that the active site is made up of amino acid residues from different portions of primary sequence. the active site employs chemical species besides the side groups of amino acids. the amino acids are located at parts of the enzyme essential for its catalytic activity, such as at the active site or at sites controlling the enzyme's structure. the enzyme's active site may be located on the enzyme's surface.
Answers
The following options are suggested based on the given information:
The enzyme's active site may be made up of amino acid residues from different portions of the primary sequence.The amino acids are located at parts of the enzyme essential for its catalytic activity, such as at the active site or at sites controlling the enzyme's structure.The active site of the enzyme is likely to be composed of amino acid residues from different parts of the enzyme's primary sequence, rather than being confined to a specific region.Enzymes are protein catalysts that are commonly used in biochemistry. An enzyme's active site is a region of the protein that binds to the substrate and catalyzes the chemical reaction. Enzymes are generally made up of amino acids, which are strung together to make a long chain. Proteins have a primary structure, which is the sequence of amino acids in the chain.
The amino acids that are far apart in the amino acid sequence of an enzyme can be essential for the enzyme's catalytic activity. This result suggests that the active site may be made up of amino acid residues from different portions of the primary sequence. The active site of the enzyme is likely to be composed of amino acid residues from different parts of the enzyme's primary sequence, rather than being confined to a specific region. Therefore, these amino acids are located in parts of the enzyme that are essential for catalysis, such as the active site or structural control sites.
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Fill in the blank. According to ______ theory, when we learn something new, a neurochemical memory trace forms, but over time this trace disintegrate
Answers
Answer: Decay
According to Decay theory, when we learn something new, a neurochemical memory trace forms, but over time this trace disintegrate
which of the following statements about staphylococcal enterotoxin is false? group of answer choices it causes diarrhea. it is resistant to low ph. it acts as a superantigen. it causes vomiting. it is produced by staphylococcus aureus growing in the host's intestines.
Answers
The statement that is false about staphylococcal enterotoxin is that: it is produced by Staphylococcus aureus growing in the host's intestines. The correct option is E.
Staphylococcal enterotoxin is actually produced by Staphylococcus aureus growing outside the host's body, in foods or on surfaces. It is a powerful toxin that can cause severe food poisoning when ingested. The other statements are all true; it does cause diarrhea, it is resistant to low pH, it does act as a superantigen, and it can cause vomiting.
Staphylococcal enterotoxin is one of several toxins released by Staphylococcus aureus, and is responsible for food poisoning. It is a potent protein toxin that is resistant to low pH levels and heat, making it particularly dangerous. It is a superantigen, meaning it can bind to the surface of many cells and cause an overactive immune response.
The most common symptom of staphylococcal enterotoxin poisoning is vomiting, but it can also cause severe diarrhea, abdominal cramps, and fever. The best way to prevent staphylococcal enterotoxin poisoning is to ensure that food is handled and stored properly.
Foods should be cooked thoroughly, stored at the right temperature, and eaten soon after cooking. Cross-contamination between raw and cooked foods should be avoided, as well as the handling of raw meat and eggs. People should also practice proper hygiene, washing their hands before and after preparing food and avoiding contact with food when sick.
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Apply the five concepts of Darwin's theory of natural selection to the evolution of the horse?
Answers
Answer:
Darwin's theory of natural selection explains how species evolve over time in response to changes in their environment. The evolution of the horse provides a good example of how these concepts work. Here are the five concepts of natural selection and how they apply to the evolution of the horse:
Variation: Natural variation exists within populations of horses, with some horses being taller, smaller, faster, or stronger than others.
Inheritance: These variations are passed on from one generation to the next through genetic inheritance. Horses with desirable traits are more likely to pass those traits on to their offspring.
Differential Survival: In any population, there is a struggle for survival, with some individuals being better adapted to their environment than others. For example, horses that can run faster or digest tougher grasses are more likely to survive and reproduce.
Reproduction: The horses that survive and reproduce pass on their advantageous traits to their offspring, increasing the frequency of those traits in the population over time.
Time: Over many generations, natural selection can result in significant changes in the population, leading to the evolution of new species. In the case of the horse, the gradual changes in hoof shape, tooth structure, and size over millions of years have led to the development of modern horses, zebras, and donkeys.
In summary, the five concepts of natural selection help explain how the evolution of the horse occurred over millions of years, resulting in the development of the modern equine species we see today.
what factor can account for the relative rate of ca2 transport across the membrane as a function of ph?
Answers
One of the factors that can account for the relative rate of Ca2+ transport across the membrane as a function of pH is the presence of ion channels.
What are ion channels?An ion channel is a protein that spans the cell membrane and forms a pore that allows the movement of ions across the membrane. The movement of ions through ion channels is usually regulated by the opening and closing of the channels.
In terms of calcium transport across the membrane, calcium channels play a crucial role in facilitating the movement of calcium ions across the membrane. These channels are selective for calcium ions and their activity can be modulated by changes in pH.
Calcium channels are activated by the binding of calcium ions to specific sites on the channel protein. At high pH, the number of negatively charged amino acid residues on the channel protein is higher.
This creates a more negative charge on the protein surface, which attracts positively charged calcium ions, increasing the rate of calcium ion transport.
Conversely, at low pH, the number of negatively charged amino acid residues is lower, resulting in a less negatively charged protein surface.
This repels calcium ions, decreasing the rate of calcium ion transport.
Therefore, the pH of the environment plays a crucial role in regulating the activity of calcium channels and thus the relative rate of Ca2+ transport across the membrane as a function of pH.
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Which organism provides evidence that matter and energy can be cycled through an ecosystem without sunlight?(1 point)
Answers
Answer:
A lanternfish on the alantic ocean.
Explanation:
I don't know what ur answer chocies are but i had this question a long time ago.
What molecules are necessary for endocytosis to occur?
Answers
Endocytosis is the process by which molecules are actively transported into the cell by enveloping them in its membrane. All cells use endocytosis and exocytosis to move molecules that cannot travel through the membrane passively. Exocytosis, on the other hand, forces substances out of the cell.
Endocytosis is classified into four kinds or pathways: caveolae, macropinocytosis, receptor-mediated endocytosis, and phagocytosis. Each route has a unique method for getting encapsulated molecules in. Caveolae are non-clathrin covered branches that develop and are found on the plasma membrane. They are made up of caveolin, an integral membrane protein. Caveolin activates, shapes, and maintains the creation of "caves" or caveolae on the cell membrane. They function as "collection" pits, gathering particular chemicals for cell communication.
They function as "collection" holes for particular molecules involved in cell communication and metabolic processes. Endocytosis is used for receptor signaling, nutrient absorption, membrane modification, pathogen entrance, neurotransmission, and cell signaling response modulation. Endocytosis has been discovered to assist in cell migration in developing organs. Toxins, pathogens, and foreign debris have also been discovered to use the various endocytic routes to obtain entrance into the cell.
Clathrin - Proteins with three "legs" that create a cage or coat around membrane vesicles for movement and are required for vesicle structure and formation.
Exocytosis is the mechanism by which substances are transported out of the cell.
Phagosomes are vesicles that develop around molecules during the phagocytosis process.
when muscles contract against a heavy load, what happens to the length of time it takes for a cross bridge cycle to occur
Answers
When muscles contract against a heavy load, the length of time it takes for a cross-bridge cycle to occur increases.
A cross-bridge cycle is a series of chemical reactions that occurs during muscle contraction, resulting in the shortening of the sarcomere. The contraction process begins with an action potential that travels down a motor neuron and into a muscle fiber.
Calcium ions are then released from the sarcoplasmic reticulum, which causes the myosin head to attach to the actin filament. This attachment creates a cross-bridge, and the myosin head changes shape, pulling the actin filament along with it.
The myosin head then releases from the actin filament and repeats the process if enough ATP and calcium are present. During muscle contraction against a heavy load, the amount of force required to move the load increases.
This requires more cross-bridge cycles to occur, which in turn lengthens the time it takes for each cycle to complete.
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Study the two statements labelled Assertion (A) and Reason (R) and choose the correct answer.
Assertion (A): Increasing pollution affects animals that survive on plants.
Reason (R): Increasing pollution causes early and excessive shedding of leaves.
a) A is true but R is false.
b) A is true and R is the correct explanation of A.
c) Both A and R are true.
d) A is true but R is not the correct explanation of A.
Answers
Damage to foliage can emerge quickly as ulcerations (dead tissue) or it can take longer to occur and manifest as a wilting or bronzing of the leaf.
The correct answer is :A.
Which kind of pollution prevents the stomata on leaves from opening?Localized dust pollution is a problem around highways, quarries, cement plants, and other industrial regions. Dust on leaves inhibits stomata and reduces their resistance to CO2, interfering with photosystem II while also blocking sunlight.
What consequences does air pollution have?Heart disease, cancer, and respiratory conditions like emphysema are some of the long-term health repercussions of air pollution. Moreover, long-term exposure to air pollution can harm a person's neurons, brain, lungs, spleen, and other organs. Several scientists think that birth abnormalities are caused by air pollution.
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there isa close relarionship between forest and wildlife justify the statement
Answers
Answer:
Yes, there is a close relationship between forests and wildlife. Forests are the natural habitats of a wide variety of wildlife species, including mammals, birds, reptiles, amphibians, insects, and many others. These forests provide shelter, food, and water for wildlife and support a complex ecosystem that is essential for the survival of many species.
Forests also play a critical role in regulating the climate, maintaining the water cycle, and preventing soil erosion. These functions are vital to the survival of many wildlife species that depend on the forest ecosystem for their survival.
The loss of forests can have a devastating impact on wildlife populations. Deforestation, habitat destruction, and fragmentation can lead to the displacement or extinction of many species. As a result, the conservation and restoration of forest habitats are crucial for protecting and preserving wildlife populations.
Therefore, the relationship between forests and wildlife is crucial and interdependent. The protection of forests is essential for the conservation of biodiversity, and the conservation of wildlife is necessary for maintaining the ecological balance of the forest ecosystem.
Answer:
The statement "There is a close relationship between forest and wildlife" is justified by various factors. Forests provide ideal habitats for wildlife to live and thrive in. Different types of species find shelter, food, and water resources in forests. Trees and other plant species also provide cover and greenery for various animals to survive.
Forests play a crucial role in maintaining the prey-predator relationship of numerous animals. For instance, herbivores get food from plants growing in forests, and carnivores prey on herbivores or other animals. If forests disappear, the entire food chain would collapse, resulting in the loss of many species of wildlife.
Forests also play a significant role in the life cycle of migratory animals. Many species, such as birds, migrate from one forest to another based on the availability of suitable living conditions. If forests vanish, migratory animals would be forced to alter their habitats, resulting in possible extinction for some species.
In conclusion, forests are essential for the survival and sustenance of wildlife. Destruction of forests leads to the loss of crucial habitats; hence efforts should be made to preserve and protect forests to save wildlife habitats.
A certain nuclear power plant is decommissioned. Several years later, the large building in which the plant was housed is completely empty. The people who worked to decommission the plant experienced some problems with nausea and anemia as a result of their work, but there have been no lasting effects. Which decommissioning process did this plant most likely undergo?
I. DECON
II. SAFSTOR
III. ENTOMB
A. I only
B. II only
C. III only
D. I and II only
E. II and III only
Answers
The decommissioning process the nuclear power plant will most likely to undergo is SAFSTOR which is given by option B.
The SAFSTOR technique of nuclear decommissioning entails "placing and maintaining the facility in a condition that permits the facility to be securely stored and later decontaminated (delayed decontamination) to levels that permit release for unrestricted use." It is overseen by the United States Nuclear Regulatory Commission.
During SAFSTOR, the de-fueled plant is monitored before it is completely decontaminated and dismantled to the point where nuclear licence is no longer necessary. Decommissioning must be completed within 60 years following the plant's shutdown.
Some of the radioactive pollutants from the reactor and power plant will decay during the storage time, reducing the amount of radioactive material to be removed during the final decontamination phase.
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Lab Activity: Blood Type Pedigree Mystery
Mystery in Wexford
answer key
Answers
A pedigree can be used to depict the blood type inheritance pattern within a family. Depending on the question, multiple interpretations are made using blood type pedigrees.
The dominant IA and IB alleles outnumber the recessive I allele. IA is stronger than . The individual exhibits antigens of type A. IB dominant over . The person shows B type of antigens.
The recessive allele is Antigens are not present in the individual.
It is codominant for IA and IB. Both antigen types, A and B, are present in the individual.
Genotypes
A pedigree is a visual portrayal of a family's familiar history over the years.
This illustration makes use of many symbols and numbers to
It is typically employed to trace the lineage of a certain characteristic or passion.
In order to properly analyse a pedigree, we must know that,
Members of the family
Geometrical figures are used to portray people.
"Men are squares,"Circles are womenUnborned people are rhombic in shape.People can be recognised by their names, numbers, or other characters. Phenotype/Trait Empty figures represent those who are healthy, normal, or unaffected. Those affected or mutated are shown as solid black figures. The generation Each file is identified with a roman number that denotes its generation.
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One of each pair of chromosomes comes from each
Answers
Answer:
One of each pair of chromosomes comes from each parent.
Explanation:
Chromosomes are any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively.
In a diploid organism (like humans) a chromosome pair is 2 chromosomes. Although we say there are two “copies” of a chromosome, they are non-identical. Each comes from a different parent (father and mother.) These come from the gametes (which are haploid, having half the number of chromosomes). Those chromosomes are not identical to the parents, but consist of a blending of the grandparent's genetic material.
which kind of fossilization process leaves behind a three-dimensional shape of an organism made out of minerals?
Answers
Answer:
Permineralization
Or
The kind of fossilization process that leaves behind a three-dimensional shape is Cast and Molds, & Petrified fossils.
Explain the difference between oxidation and digestion.
Answers
NEED HELP ASAP. SEE IMAGE BELOW. BRAINLIEST + 100PTS!!
matching!!
Answers
Answer: C for The first one
A for the 2nd
D for the 3rd One
B for last
Explanation:
Answer:
Solar Energy = A
Wind Energy = D
Hydropower = C
Utility - scale = B
Explanation:
What type of hemoglobin has the highest affinity for oxygen?
Answers
The type of hemoglobin that has the highest affinity for oxygen is fetal hemoglobin (HbF).
Fetal hemoglobin consists of two alpha and two gamma subunits, whereas adult hemoglobin (HbA) consists of two alpha and two beta subunits. The gamma subunits in fetal hemoglobin have a higher affinity for oxygen than the beta subunits in adult hemoglobin. This higher affinity allows fetal hemoglobin to more readily pick up oxygen from the mother's bloodstream through the placenta. After birth, the production of fetal hemoglobin declines and adult hemoglobin production increases.
However, some individuals may have genetic mutations that cause them to continue producing fetal hemoglobin, which can provide some protection against certain blood disorders, such as sickle cell anemia.
Fetal haemoglobin is the form of haemoglobin that has the greatest affinity for oxygen (HbF).
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What part of the RNA molecule predict more likely than DNA to
participate in enzymatic reactions
Answers
Answer:
xdfyttyfyfhdjffhfhhfghgfgjhggghxjjhg
In domestic swine there is a dominant allele that produces a white belt around the body. Suppose a heterozygous belted pig and solid pig mate. What is the probability they will produce a solid pig? (7 pts) 1. What is the dominant trait? What is the recessive trait? Dom: Rec: 2. What letter is assigned to the dominant and recessive trait? Dom: Rec: 3. In order to be belted, what 2 GENOTYPES could the offspring have? 4. In order to be solid, what GENOTYPE must the offspring have? 5. What are the parent genotypes you are crossing? 6. What is the ratio of probability of getting a solid pig from this cross?
NEED ASAPP
Answers
2.According to Chromosomal convention, a gene's dominant allele is represented by an upper case, whereas its gene mutation is depicted by a small letter.
Is the symbol H genetic or dominant?Alleles are represented by an upper case (H) for dominant alleles and a tiny (lower case) form (h) for recessive genes. whereas a people of diverse backgrounds (also known as a hybrid) is one that possesses two distinct forms.
Is YY homozygotes or dominant?The dominant autosomal genotype as yy (2 y alleles). White seeds are the morphology of this genotype. Each person produces different types of gametes depend on their genotypes. Hence, only spermatozoa with Y alleles can also be created by a YY genotype.
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The transport of glucose into the cell occurs by facilitated diffusion. Once glucose enters the cellit is rapidly converted into another molecule such as glucose-6-phosphate or glycogen. Discuss what effect does this converstion have on the cell's ability to acquire more glucose via facilitated transport
Answers
The conversion of glucose into glucose-6-phosphate or glycogen has a significant effect on the cell's ability to acquire more glucose via facilitated transport.
Facilitated diffusion is a passive process, which means it does not require energy to transport molecules across the cell membrane. However, facilitated diffusion relies on the availability of carrier proteins on the cell membrane that transport specific molecules, such as glucose, into the cell. These carrier proteins become saturated with glucose molecules at high glucose concentrations, limiting the rate at which glucose can enter the cell.
When glucose enters the cell and is converted into glucose-6-phosphate or glycogen, it reduces the concentration of free glucose inside the cell. This reduction in the concentration of free glucose increases the concentration gradient of glucose across the cell membrane, which allows for more glucose molecules to be transported into the cell via facilitated diffusion. This is known as the glucose concentration gradient effect, and it allows the cell to continue acquiring glucose even when the concentration of glucose outside the cell is low.
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Need help in science
Answers
What does a decrease in salmon population due to an increase in river temperature indicate?
Answers
A decrease in salmon population due to an increase in river temperature likely indicates a change in the environment, such as climate change.
What is population?The term "population" is frequently used to describe the total number of people living in a particular location. Governments undertake a census to estimate the number of residents in a certain area.
A collection of creatures of the same species that coexist and breed in the same location at the same time (e.g., human population, the population of apple trees, total population of deer in a forest). It is a portion of a species' total population that lives in a particular region of the globe.
Warmer temperatures can lead to decreased oxygen levels in the water, which can be harmful to fish, or other changes in the river habitat that make it difficult for salmon to survive.
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Bacteriophages are a type of virus that infects bacteria. Scientists have started to use these bacteriophages to move genetic information from one bacterium to another. Which Characteristic of a virus is an advantage and why?
Answers
One of the characteristics of a virus that is an advantage for scientists using bacteriophages to move genetic information from one bacterium to another is the ability of viruses to specifically target host cells.
Viruses have unique structures on their surfaces that allow them to recognize and attach to specific host cells, such as bacteriophages attaching to specific bacteria. This specificity means that scientists can use a particular virus to deliver genetic information to only the target bacterial species, without affecting other non-targeted species.
Another advantage of using bacteriophages is their ability to transfer DNA between bacteria by a process known as transduction. This process allows for horizontal gene transfer, which can result in the acquisition of new traits by the recipient bacterium, such as antibiotic resistance.
Bacteriophages can also be used as a potential alternative to antibiotics to treat bacterial infections, as they have a specific mechanism of action and do not affect beneficial bacteria in the same way that antibiotics do.
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If heart rate increases 4-fold, and stroke volume increases 1.5-fold, how many fold does
cardiac output increase?*Type a number to one decimal place*
Answers
Cardiac output is equal to the product of heart rate and stroke volume. Therefore, in this case, cardiac output would increase 6-fold (4 x 1.5).
What is cardiac?Cardiac is a term used to refer to anything related to the heart. Specifically, it is used to describe the structure, function, and diseases of the heart. Cardiac diseases include coronary artery disease, heart failure, arrhythmia, and congenital heart defects. Cardiac structure and function are determined by the anatomy of the heart, which includes the four chambers, valves, and complex network of blood vessels. The electrical system of the heart controls the heartbeat and is responsible for the coordination of the contraction and relaxation of the heart muscle. Cardiac care is a type of medical care that focuses on the diagnosis,
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Which phrase describes nervous tissue?
A. Made up of several thick protective layers
B. Made up of strands and masses of neurons and glial cells
C. Covered with hairlike structures called cilia
D. Thin and flat, forming sheets
Answers
Made up of strands and masses of neurons and glial cells describes nervous tissue. The correct option is B
What is nervous tissue ?Nervous tissue is a type of biological tissue that is composed of specialized cells called neurons and supporting cells called glial cells.
Therefore, Nervous tissue is composed of specialized cells called neurons and supporting cells called glial cells that work together to transmit electrical and chemical signals throughout the body. It is found in the brain, spinal cord and nerves and is responsible for controlling and coordinating many of the body's functions.
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Priya says that behaviors cannot be adaptations because they are not inheritable. What is the BEST evidence that some advantageous behaviors may be linked to genes and reinforced through natural selection?
A.
Many deep-sea animals have large eyes that help them see better.
B.
The members of fish populations can have different behaviors.
C.
Most marine plants live only in the sunlight zone of the ocean.
D.
Members of some marine species live in clusters for protection.
Answers
Answer:
The answer is B.
Explanation:
The BEST evidence that some advantageous behaviors may be linked to genes and reinforced through natural selection is B. The members of fish populations can have different behaviors. Just like physical traits, behaviors can also be genetically determined and can be passed down through generations. The fish populations that have inherited behaviors that make them more successful in their environments are more likely to survive and reproduce, thereby passing those behaviors to their offspring. As a result, advantageous behaviors can be shaped by natural selection and become more prevalent in a population over time.
Renewable resources are those that can be synthesized by humans.truefalse
Answers
Renewable resources are those that can be replenished naturally within a relatively short period of time, such as solar, wind, hydro, and geothermal energy, as well as biomass and certain types of agricultural products. They are not necessarily synthesized by humans.
Answer:
False
Explanation: