Breathing source oxygen elements easy to live human
Answer:
option d Variations in local temperatures
Explanation:
<em>this </em><em>might </em><em>be </em><em>ur </em><em>answer </em><em>I </em><em>guess </em>
If this is the photo
Then your answer is Medulla Oblongata, if it is the area shaded purple above, your answers is Pons.
Answer:
C
Explanation:
all of the DNA the makes up a chromosome
Answer:
the amount of genetic variation in a population.
Explanation:
The proportion of the members of a population possessing beneficial allele due to natural selection will increase with time while the proportion of those possessing a harmful allele will decrease with time. After many generations, all the members carrying the harmful allele will die out leaving only those with the beneficial allele. The result is a genetic variation of the population with time.