Answer:
the answer youre looking for is A.
(every object located in the universe emits radiation)
Answer:
Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.
Answer:
The effiency decreases at higher altitudes
Explanation:
The higher up a person is on a mountain, the thinner the air is due to the lack of plants that can grow. An example of this is Mount Everest. At a certian point on the mountain, called the "Death Zone", the air is too thin to supply enough oxygen to the human body to survive. That's why they bring oxygen tanks with them on their adventures.
Is there options that I can shoes from
B. Pine trees, this is the answer that was right after I took the test XD
