Herbicides are not a type of biological contamination since they are toxic substances that are not living things.
Biological contamination is the contamination by living microorganisms that are toxic. Herbicides are not the type of biological contamination. Thus, option D is correct.
What are biological contaminations?
The contamination of the food, water, air, or soil due to harmful living organisms is called biological contamination. These microbes cause diseases and illnesses in the other species.
Viruses, bacteria, and protozoans are the biological contaminants that result in diseases and pollution. On the other hand, herbicides are chemical substances that are used to kill the pests infesting the crops.
Therefore, herbicides are not biological contaminants.
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Which statement is true based on the data in the table?
O The United States uses more land to grow crops
than to maintain forests.
O The United States uses more land for parks and
wildlife than for forests.
O The United States uses more land for parks and
forests than for urban areas.
O The United States uses more land for urban areas
than for grasslands and ranges.
Answer: C
Explanation:
The United States uses more land for parks and forests than for urban areas. Therefore, option "C" is correct.
What are the nature protection strategies of the United States?The 42,826 protected areas in the United States covered 1,235,486 km2 in 2022, or 13% of the country's land area. The country system includes 424 areas which covering more than 85 million acres in every state, the District of Columbia, and American Samoa.
The smallest park is Gateway Arch National Park in Missouri, which is 91 acres. This is also one-tenth of the world's protected land area. National parks protect a total of approximately 52.2 million acres, with a median of only 208 thousand acres.
Therefore, other nations should also follow the same strategies and do afforestation.
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Osmosis requires energy
True
Or
False
Answer:
Diffusion and osmosis don't require the cell to expend any of its own energy, as they are passive processes. As we know both are passive processes and yet (in basic, short terms) diffusion is higher to lower and osmosis is lower to higher, so movement to concentration doesn't determine whether it is active or passive.
Explanation: ur welcome
Red blood cells are classifed as type A or type B, based on their surface antigens. Type O
blood does not contain any antigens. The chart below shows the possible phenotypes of
each blood type.
Blood Types
Blood Type Phenotype Alleles
B:
AB
B
AB
Which mechanism explains how both A and B antigens produce type AB blood?
Answer:
codominance
Explanation:
The mechanism that explains how both A and B antigens produce type AB blood is codominance. In codominance, both alleles are expressed equally in the phenotype, which means that both the A and B antigens are present on the surface of the red blood cells in type AB blood.
what is antigen?The mechanism that explains how both A and B antigens produce type AB blood is codominance. In codominance, both alleles in a heterozygous individual are fully expressed in the phenotype. Therefore, in the case of blood type AB, the A and B alleles are codominant, and both antigens are expressed on the surface of the red blood cells.
Hence, The mechanism that explains how both A and B antigens produce type AB blood is codominance. In codominance, both alleles are expressed equally in the phenotype, which means that both the A and B antigens are present on the surface of the red blood cells in type AB blood.
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How are traces of ancient phytoplankton used to determine cooler and warmer water temperatures?
A. Chemical traces of phytoplankton that remain after millions of years are analyzed for data indicating water temperatures.
B. Climatologists analyze how much photosynthesis occurred after millions of years as an indicator of warmer water.
C. Large numbers of phytoplankton in fossil records after millions of years indicate warmer waters.
D. Fossil records indicate different species of phytoplankton prefer warm water to those that prefer colder water.
Answer:
c
Explanation:
i think
Answer:
A. Chemical traces of phytoplankton that remain after millions of years are analyzed for data indicating water temperatures.
PLEASE HELP!!
The process, below, does what to benefit a cell? *
Prevents osmosis from causing a cell to shrivel or rupture.
Allows white blood cells to tag pathogens with antibodies.
Decreases the necessary activation energy to speed up the chemical reaction.
Increases the necessary activation energy to slow down the chemical reaction.
Answer:
Decreases the necessary activation energy to speed up the chemical reaction.
Explanation:
This picture shows substrates binding to the activation site of an enzyme causing the enzyme to change shape and therfore speeds up the chemical reaction.
Is the mesosphere temperature high or low and what is the temperature
what determines the traits of an organism
a. Relation of AT to CG base pairs
b. number of nitrogen bases in RNA
c presence of ribose or deoxyribose in a nucleic acid
d sequence of nitrogen bases in DNA
Answer:
A
Explanation:
I think this is because the base pair orders change from person to person.
Of the alternate energy sources you have learned about, which one do you think is the most likely to become a part of our country's future. Why do you feel this way?
Answer:
probably water wheels
Explanation:
In {external fertilization,
internal fertilization,
conjugation, or pollination}
mating partners come close to one another and release eggs and sperm.
Answer:
Explanation External fertilization is characterized by the release sperm and eggs into In fertilization protects the fertilized egg or embryo from predation an Ovoviparity is characterized by an organism retaining a fertilized egg
28) 6CO2 + 6H20 + (energy) → C6H12O6 + 602
What process is being shown in the chemical equation above?
Help
Answer:Photosynthesis can be represented using a chemical equation. The overall balanced equation is. ... Learn about the retirement process, managing your existing files, and alternative services at the Andrew File System Retirement Information ...
Explanation:
1- why dong you usually get sick from the exact same pathogen twice
2-if a pathogen mutated so it had different antigens, would your memory B and memory T cells recognize it?
please help this is due at 3pm
1: For example, rhinovirus has over 100 different serotypes. Now, the good news is that you can't get ill from the same virus serotype right after getting better, due to the fact that you'll have developed antibodies which help to protect your immune system for a little while.
2:Most children in the United States are now vaccinated against measles virus; before vaccination was widespread, most were naturally exposed to this virus and suffered from an acute, unpleasant, and potentially dangerous viral illness. Whether through vaccination or infection, children exposed to the virus acquire long-term protection from measles. The same is true of many other acute infectious diseases: this state of protection is a consequence of immunological memory.
The basis of immunological memory has been hard to explore experimentally. Although the phenomenon was first recorded by the ancient Greeks and has been exploited routinely in vaccination programs for over 200 years, it is just now becoming clear that memory reflects a persistent population of specialized memory cells that is independent of the continued persistence of the original antigen that induced them. This mechanism of maintaining memory is consistent with the finding that only individuals who were themselves previously exposed to a given infectious agent are immune, and that memory is not dependent on repeated exposure to infection as a result of contacts with other infected individuals. This was established by observations made on remote island populations, where a virus such as measles can cause an epidemic, infecting all people living on the island at that time, after which the virus disappears for many years. On reintroduction from outside the island, the virus does not affect the original population but causes disease in those people born since the first epidemic. This means that immunological memory need not be maintained by repeated exposure to infectious virus
List the 3 things acceleration does.
Answer:
a change in velocity, a change in direction, or a change in both velocity and direction.
Some vitamins are mostly found in animal-based foods, while some vitamins are abundant in plant-based foods. The best source of vitamin C is ____ , while ____ is naturally rich in vitamin B12. First blank: cheddar cheese, strawberries, lentils Second blank: fish, broccoli, peanut butter
Answer:
I did this for my test and had them correct
1. strawberries
2. fish
Explanation:
As per the given scenario, The best source of vitamin C is strawberries, while fish is naturally rich in vitamin B12. The correct option for first blank is B, and for second one is A.
What are vitamins?A vitamin is an organic molecule that is an essential micronutrient that an organism requires in small amounts for proper metabolism function.
Fat-soluble vitamins are stored in the liver, fatty tissue, and muscles of the body. Vitamins A, D, E, and K are the four fat-soluble vitamins.
Water-soluble vitamins do not accumulate in the body. Vitamin C and all of the B vitamins are among the nine water-soluble vitamins.
As per the given scenario, The best source of vitamin C is strawberries, while fish is naturally rich in vitamin B12.
Thus, the correct option for first blank is B, and for second one is A.
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How does geotheHow does geothermal energy differ from solar energy?
Geothermal energy is cooler and denser than solar energy.
Geothermal energy comes from the internal heat of Earth.
Geothermal energy is transmitted through the atmosphere.
Geothermal energy results from radiation of electromagnetic waves.rmal energy differ from solar energy?
Answer: B || Geothermal energy comes from the internal heat of Earth.
Explanation:
hope it helped xx :))
when do birds use their teeth????
Answer:
to eat worms
Explanation:
Answer:
Birds do not have teeth, however...Explanation:
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According to The Cornell Lab, "Birds do not have teeth, however, they may have ridges on their bills that help them grip food, but this does not count as teeth. So what about birds that have “tooth” in their name, like Double-toothed Kite? Some birds of prey have a sharp ridge or “tomial tooth” on the bill that they use to bite into their prey when subduing it. But these modifications to the bill surface are not considered the same thing as individualized teeth seen in other animals."
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Hope this helps! <3
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what are the products of alcoholic fermentation ?
what are the products of lactic acid fermentation?
Answer:
alcoholic-- ethanol and carbon dioxide
lactic-- it produces lactate
Explanation:
The earth , the sun , and the seven other planets that are in orbit around the sun are part of the solar system. How does the size of the solar system compare with the size of the milky way galaxy ?
Answer:
Size of milky way galaxy is very large than our solar system.
Explanation:
The size of the solar system is much smaller than the size of the milky way galaxy because our solar system is a part of milky way galaxy. The radius of our solar system is 4.545 billion km while on the other hand, the radius of the milky way galaxy is 52,850 light years which is very very large than the radius of our solar system. Milky way galaxy has 100–400 billion planets while in our solar system has only eight planets.
A child pulls a toy across the floor. What is the equal and opposite force for the force of the child pulling forward on the toy as described by Newton's third law? Choose 1 answer: Choose 1 answer: (Choice A) A Ground's normal force pushes up on the child's feet. (Choice B) B Ground's friction pushing on the toy (Choice C) C Child's feet's friction pushing on the ground in the opposite direction (Choice D) D Toy pulls on the child in the opposite direction
Answer:
D. Toy pulls on the child in the opposite direction
Explanation:
Newton third law of motion states that for every action, there is an equal and opposite reaction. This means that whenever an object 1 exerts a force (action force) on another object 2, object 2 exerts a force (reaction force) of equal magnitude but opposite direction on object 1.
According to this question, a child pulls a toy across the floor. Based on Newton third law described above, the toy will pull the child with an opposite force that is equal in magnitude. Hence, the equal and opposite force is: Toy pulls on the child in the opposite direction.
PLEASE HELP!!!! I JUST NEED THIS INFORMATION SO I CAN START!!!
One of Jase's favorite hobbies is catching frogs. Lately, he 's also been studying a lot He about physical chemical changes. He understands that new substances are produced during a chemical change, but what happens during a physical change?
Answer:
On explanation
Explanation:
A physical change when objects or substances undergo a change that does not change their chemical composition, examples would include melting, transition to a gas, textural change, shape, size, color, volume and density.
pick two structures from an animal cell and explain how they work together and how their functions are vital in keeping the cell alive. the options are cytoplasm, smooth er, nucleolus, nucleus, mitochondria, lysosome, and cell membrane.
Answer:
the cell membrane is the semi-permeable protective cover that keeps the cell held together. the cytoplasm is semi-fluid within the cell membrane that keeps the cell in shape.
Explanation:
In a photosynthesis reaction ,enzymes act to-
Answer:
The Light Reactions
An enzyme in photosystem II splits water into hydrogen and oxygen. ... An enzyme called ATP synthase uses that potential energy to synthesize a molecule called ATP, which is the most common energy currency for cells, and which is used in the dark reactions of photosynthesis.
Explanation:
Look at the punnett square above. What would be the percentage of short plants if two heterozygous plants (Tt) as seen above where to have offspring?
A. 25%
B. 50%
C. 75%
D. 100%
How are proteins and nerve cells interrelated?
Answer:
The answer to Your Question Is down below :)
Explanation:
Working with mice, scientists have discovered that a particular protein helps nerve cells extend themselves along the spinal cord during mammalian development.
"DNA replication is not considered a semi-conservative process."
True or false
Answer:
False
Explanation:
A student collects 100 seeds from a group of plants produced from the
same parent plants. Of the seeds collected, 80 are blue seeds, and 20 are
white seeds. The trait for seed color is controlled by one gene and
results in seeds with either a blue color or white color.
Which Punnett square of the parent plants' traits likely corresponds
with the 100 seeds collected?
Answer:
A
Explanation:
Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 4 AU, and it takes 432 Earth days for Planet A to orbit the star. If it takes 1,460 days for Planet B to complete an orbit, what is the average distance from Planet B to the star?
Answer:
3.3
Explanation:
no reason for the explanation
Answer:
C. 9 AU
Explanation:
The period (T) of Planet A is 432365=1.2 Earth years. The period of Planet B is 1,458365=4.0 Earth years. Kepler's Third Law states that
a3=kT2
Substituting the known values of a and T for Planet A, we have
43=k⋅1.22
64=k⋅1.4
k=45.7
Using this value for k, we can solve for the distance from Planet B to the star
a3=45.7⋅4.02
a3=731.2
a=9.0AU
An alternative solution is to notice that a3T2=k for both orbits, which means that the ratio a3T2 is the same for both orbits. So, 434322=x314582. Solving this proportion gives x3=729, so x=9.0AU.
A good example of a natural phenomena causing geographical isolation is the
-Mississippi River
-Sahara Desert
-Grand Canyon
-Great Pyramid
Answer:A
Explanation:because
30) These two equations are related because the BLANK of cellular respiration are the BLANK of photosynthesis. The BLANK of photosynthesis are the BLANK of cellular respiration.
Plz fill the blanks in :(
Answer:
Explanation:These reactions occur in the stroma the fluid filled area of a chloroplast ... Photosynthesis Respiration amp Interdependence Two of the 5 basic habitat resources are food and air. ... Without oxygen a cell can extract a net gain of only _____ molecules of ATP from ... Fill in the blanks in the Photosynthesis equation below 15.
One strand of DNA contains 200 nucleotides of adenine, 300 nucleotides of cytosine, 150 nucleotides of thymine, and 100 nucleotides of guanine. How many amino acids will be in a protein encoded in this region of a DNA molecule: ........
PLEASE HELP!!!!!
Answer:
because there are only 20 different amino acid but 64 possible condoms most amino acid are indicated by more than one condon.
PLEASE HELP ME WITH THIS!
Considering ethical questions is part of a marine scientist’s job. Part of being ethical is doing your homework and exploring all sides of an issue. Choose a current ethical issue in marine science, such as the use of genetically modified organisms (GMOs), conditions in fish farms, or another topic your instructor approves. Find two perspectives supporting one side of the ethical issue and two supporting the other. Be sure to use reliable sources, such as university web sites or newspaper/magazine articles. Create an outline with at least five points for each side. Then write a brief paragraph explaining what you believe an ethical choice around this issue is. Remember, ethical problems are difficult because both sides have valid points. Be sure to consider and discuss at least one point you think is valid from the side that you disagree with in your conclusion as you explain why your choice is the ethical one. Also, include a list of sources that you used. Two is the minimum for each point of view.
lo siento cariño, esto está fuera de mi alcance, los biloogistas marinos son geniales y me encanta ayudar, pero no puedo, lo siento mucho. como si realmente estuviera jodiendo como si apesta jaja quiero ayudarte pero no puedo
One current ethical issue in marine science is the use of genetically modified organisms (GMOs) in aquaculture.
What are genetically modified organisms?Genetically modified organisms (GMOs) are living organisms whose genetic material has been artificially altered in a laboratory using genetic engineering techniques.Here are two perspectives supporting each side of the issue:
Perspective 1: According to a report by the World Health Organization (WHO), GMOs have the potential to reduce the environmental impact of aquaculture by decreasing the need for wild fish as feed, reducing the use of antibiotics, and decreasing the risk of disease outbreaks.
Perspective 2: Opponents of GMOs in aquaculture argue that they pose a significant risk to wild fish populations and the environment. According to the Ocean Conservancy, GMO fish can escape from fish farms and breed with wild fish, potentially altering the genetic makeup of natural populations and harming biodiversity.
Therefore, use of GMO's is profitable as well as hazardous for the environment.
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