18) When a population becomes larger than its carrying capacity, which one of the following may occur? A) The death rate may fall.

B) The birthrate may rise.

C) The migration rate may rise.

D) None of the above

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of