Explanation:
Nuclear fusion is a process in which two small nuclei combine together to result in the formation of a larger nuclei.
In Sun, the first step of hydrogen fusion includes combining of two hydrogen nuclei to result in the formation of a deuterium, positron and neutrino.
The nuclear fusion reaction inside the sun is as follows.
Thus, we can conclude that products of step 1 of the hydrogen fusion process in the Sun are isotope of hydrogen, a neutrino, and a positron.
Glucagon acts on the receptors of the liver cell. The gpcr include a internal signaling in the cell following the heterotrimeric G-proteins dissociates. It activates a pathway that results in the breakdown of glycogen to glucose or the de novo synthesis of glucose in the cells.
Correct option is C. This evidence supports the claim that <u>natural selection</u><u> can produce new structures by </u><u>coupling together parts</u><u> of other </u><u>structures</u><u>.</u>
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<h3>How are gene variants involved in evolution?</h3>
Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes. Genetic variations can arise from genetic variations (also called mutations) or from a normal process in which genetic material is rearranged as the cell is about to divide (known as genetic recombination).
Genetic variations that alter gene activity or protein function can introduce different traits into an organism. If a trait is beneficial and helps the individual survive and reproduce, the genetic variation is more likely to be passed on to the next generation (a process known as natural selection).
Over time, as generations of individuals with the trait continue to reproduce, the favorable trait becomes more and more common in a population, making that population different from the ancestral population. Sometimes the population becomes so distinct that it is considered a new species.
To learn more about evolution from given link
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force has many different definition, here are some examples.
1) Force is a push or pull
2) Force is the capacity to do work or cause physical change
3) Force= Mass times acceleration (F = ma)
<span>4) A force is that which changes or tends to change the state of rest or motion of a body</span>
