Which phrase is the best summary of the model?

A. A food chain

B. A series of trophic levels

C. A series of light and dark reactions

D. A net transfer of energy

What is the term for the two sets of chromatids formed in the parent cell a. haploid b. diploid c. gamete d. tetrad

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

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