Answer:
The second neck vertebra evolved to allow rotation of the neck for moving the head left and right. As tetrapod species continued to evolve on land, adaptations included seven or more vertebrae, allowing increasing neck mobility.
Explanation:
1. Explain how forces of attraction and repulsion exist within an atom.
Answer:
Oppositely charged particles attract each other, while like particles repel one another. Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.
Explanation:
Answer:
1. Electrons surrounding a nucleus are attracted to the protons within it because electrons and protons have opposite charges. Electrons closest to the nucleus are attracted with such a force that they can’t escape from the atom. These electrons tend to shield the protons from electrons that are farther away because electrons have the same charge and repel each other. Electrons that are farther away have less attraction to the protons within the nucleus and are more likely to be detached from the atom.
2. Electrons can be transferred from atoms of one body to atoms of another body through friction. This can occur when one body is rubbed against another or when a liquid flows across a solid. In either case, one body may be given a positive charge while the other body is given a negative charge of the same magnitude. Both charges are developed at the same time. Electrons can also be transferred from one body to another when a charged body comes into contact with an uncharged body. The electrons move in the direction that will equalize the charges; thus, the uncharged body will be given the same charge as the charged body.
3. Free electrons move from points of negative charge to points of positive charge. When these electrons move freely from one point to another with little resistance, the material they’re traveling through is said to be a conductor. Conductors have a large number of free electrons. Insulators, on the other hand, have very few free electrons and offer great resistance to the movement of these electrons. Electric charges produced on one end of a body composed of insulating materials will most likely not spread throughout the body. In a conductor, this charge would spread throughout the entire body. Metals are generally conductors; oils, rubber, air, porcelain, and plastics are good insulators.
4.
Lightning is produced by the rapid transfer of free electrons when one of the following conditions exist: One part of a cloud is positively charged and a neighboring part of the same cloud is negatively charged. A positively charged cloud comes near a negatively charged cloud. A cloud with either a positive charge or a negative charge comes near the earth.Explanation:
Pennfoster answer
Stand and let your hands hang next to your sides for a few minutes. Then, look at the backs of your hands. Do you see any bumps on the surface on top of your veins? What might those be, and what are their function?
When you stand and let your hands hang next to your sides for a few minutes, the bumps you see on your veins are the valves that help move blood to the larger veins.
What we know about vein valves.There are valves located throughout the veins in our bodies. Most of these are located in points where smaller venules fuse with the larger veins.
Their function is to prevent blood from flowing back into the smaller veins, thus helping with the normal blood flow of the body.
Given that the veins in our bodies are littered with small valves to help the blood return to the heart correctly, we can confirm that these are the small bumps that we can see when letting our hands down for a few mins, as they fill with the blood they try not to let flow back into the smaller veins.
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what is the fundamental unit of matter?
the atom is the fundamental unit of matter.
(hope this helps ^^)
4.
______ describes the average conditions of our atmosphere over a long period
of time.
Answer:
The answer is Climate.
Plz help I don’t know the answer to this!!
Please help me need this before 8:00am
The questuon is in the picture
Answer:
I think the answer is D.
Explanation:
I think this because I just did the Periodic Table in school, also they are group by the same color by physical and chemical properties.
Why does calcium concentration matter to a cell?
Answer:
HOPE IT MAY HELP YOU
Explanation:
Calcium-based signaling is used in many cellular and neuronal processes to initiate rapid responses to extracellular signals. Cells therefore maintain tight control over intracellular Ca2+ levels, using a variety of channels and pumps.
Answer:
to answer your question it is
Explanation:
Calcium-based signaling is used in many cellular and neuronal processes to initiate rapid responses to extracellular signals. Cells therefore maintain tight control over intracellular Ca2+ levels, using a variety of channels and pumps. ... neuron
does photosynthesis occur in mushroom give a reason to support your answer
Answer:
No
Explanation:
Although mushrooms and fungi have a cell wall like plant cells, fungi are unable to make their own food and must feed on decaying matter to gain the energy needed for survival.
Hope this helps :)
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Which one of the following organisms IS EATEN BY AN OMNIVORE in this food web?
If you don’t know the answer please don’t guess bc this is ixl and it’ll start me over.
Answer:
the cytoplankton
Explanation:
Plants have an added layer that animal cells do not. What is that added layer called?
Answer:
a cell wall
Explanation:
Elisa feel tired because she has a condition
Answer:
I'm sorry to hear that.
Answer: Its because she has diabetes.
Explanation: Her cells are not getting enough glucose.
Reasoning: Write a three sentence statement that connects your evidence to your claim
about living organisms.
Answer:
Living organisms such as birds, animals, plants and microorganisms form the biotic component while land, air and water form the abiotic components. Biotic and abiotic components interact with each other resulting in transfer and replenishment of energy and nutrients.
Explanation:
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
Hey bro y have you came in my clan?
I m waiting for you....
I'll give u co leader
My id :- #LV89QRGCL
Can someone pls help me with this (8th grade science)
Answer:
A
Explanation:
As he kicks the ball the speed increases, where he kicks the ball also is a factor, since he kicks it in the same direction that is why it is choice A.
Name of Tail-like organelle used by some protist
Answer:
flagellum
Explanation:
Flagellum enable some protist to move
Which of the following is not a reason for cell devision?
A. DNA cannot be copied quickly enough in large cells
B.The cell gets too big to process and transport nutrients
C. Surface area to volume ratio becomes to large
D.New cells are needed for growth
Answer:
C
Explanation:
thats not true
Which of the following statements is true regarding electromagnetism?
All wires are electromagnetic.
Only wires carrying current are electromagnetic.
Only iron wires are electromagnetic.
Only copper wires are electromagnetic.
Answer:
Only iron wires are electromagnetic.
Part D)
Think about pushing two boxes of different weights across the floor-one box is a lot heavier than the other box. How will the amount of force change as you push each box? Explain how this relates to energy expenditure of two people-one person who's heavler than the other.
This is on plato and edmentrum. :)
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
copied directly from edmentum/plato
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
PLZ HELP WILL BRAINLIEST
IF U DONT KNOW THE ANSWER DONT U DARE
Answer: I'm pretty sure this is true
Explanation:
List three ways in which a sperm cell differs from other cells in the
human body
Need help ASAP
The Crust of the earth is mostly made of.......
a.Fe and Ni
b. Silica
c. Magnesium
d. Aluminum
Answer:
b. silica
Explanation:
!!
Explanation:
A crust is the outermost layer of a planet. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The upper part of the mantle is composed mostly of peridotite, a rock denser than rocks common in the overlying crust.
the table show five of the most common chromosomal abnormalities that occur during reproduction. each abnormality cause significant alteration to the genome of the individual in which they occur. analyze the information in the table and determine the genotype of the abnormality that will result in a male having some female characteristics
a) down syndrome;xy
b)edwards syndrome;xx
c) turner syndrome;xyy
d)kilinefelter syndrome;xxy
Answer:
d)
Explanation:
The abnormality that will result in a male having some female characteristics is Klinefelter syndrome that is Option D is the correct answer. The Klinefelter syndrome, which has XXY genotype. This disease affects only the male
What are the different types of chromosomal abnormalities?Chromosomal abnormalities are of different types; some are related to autosomes, and some are related to X and Y chromosomes. The down syndrome happens due to the trisomy in the 21st chromosome, which means instead of two chromosomes, there are three chromosomes.
In Patau syndrome, the trisomy is seen in the 13th pair of homologous chromosomes, and as a result, instead of two chromosomes, three are present. Klinefelter syndrome is associated with males who have an extra X chromosome. Infertility is observed as a result of this male display of female characteristics, such as behavioral changes. Turner syndrome is associated with females who have lost one X chromosome.
As a result, the correct answer is option D, which is Klinefelter syndrome, which is XXY.
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What happened when Earth's first atmosphere collapsed? Will mark you as brainliest!
- it created oxygen
-it formed the oceans
-it triggered an ice age
-it fell as rain, watering the earliest plants
Explanation:
solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth's surface.Plants and land animals would die
What is a component of amino acid not contained in starch
A. Amino acids contain hydrogen.
B. Amino acids contain oxygen.
C. Amino acids contain carbon.
D. Amino acids contain nitrogen.
Answer:
D. Amino acids contain nitrogen
Explanation:
...
Please help it’s due today!!
A. Suzie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements.
Answer:
This question is incomplete, the complete part is: What is the independent variable in this experiment? A) The plant species B) The amount of water that each plant gets C) The amount of time D) The different types of light the plants were put under.
The answer is D
Explanation:
In an experiment, the INDEPENDENT VARIABLE is the variable that is changed or manipulated by the experimenter in order to effect a measurable response.
In this case, Suzie Q wants to know the effect of different colors of light on the growth of plants. She conducts this experiment using different colors of light namely: white light, green light, blue light, red light etc. This shows that the variable being changed/manipulated is the different colors of light. Hence, the INDEPENDENT VARIABLE is the DIFFERENT TYPES OF LIGHT THE PLANT WERE PUT UNDER.
Which statement best describes the significance of meiosis to sexual reproduction?
A. It produces haploid gametes, with half the number of chromosomes.
B. It creates organisms with better adaptability to the environment.
C. It allows all types of cells to produce two sets of identical chromosomes.
D. It produces up to eight diploid cells, each with the same number of chromosomes.
In meiosis sexual reproduction produce haploid cells to produce gametes and chromosome number is reduced, hence option a is correct.
What is meiosis in sexual reproduction?Gametes or sex cells, which are needed for sexual reproduction are created during meiosis.
It deactivates the sporophytic information while activating the genetic information for the production of sex cells.
Meiosis is a kind of cell division that results in the production of four gamete cells and a 50% reduction in the number of chromosomes in the parent cell. To develop egg and sperm cells for sexual reproduction, this procedure is necessary.
Therefore in sexually reproducing organisms meiosis is important to produce gametes, hence option a is correct.
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what is human inference?
Answer:
How humans draw conclusions.
Explanation:
Men who are kidnapped for human trafficking are usually held under debt bondage or _____.
soldiering
peonage
sex slavery
sex tourism
Answer:
It is Soldering not peonage
Explanation:
Peonage is what they do for Men not young boys.
Men who are kidnapped for human trafficking are usually held under debt bondage or peonage. Option B. This is further explained below.
What is peonage?Generally, Men who are kidnapped for human trafficking are frequently held hostage.
In conclusion, peonage defines Men who are kidnapped for human trafficking.
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what position will kamala harris hold on sunday 20,2021
Answer:
Vice President?
Explanation:
Answer:
vice president she the first black woman,indian and woman to be vice president her innaguration was yesterday
Explanation: