Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
One of these principles, now known as Mendel's law of independent assortment, states that allele pairs separate during the formation of gametes. This means that traits are transmitted to offspring independently of one another.
Answer:
A system in dynamic equilibrium will have small changes that sum together to produce no net change. Dynamic equilibrium is different from a static equilibrium, in which the parts do not move once they've reached equilibrium.
Explanation:
I think it is compound, that is a I think so I might be wrong
The proportions of DNA bases are similar among all organisms.
