Which choice is not an example of a molecule? PLEASE ANSWER

(A) O3

(B) Mn

(C) KOH

(D) H2S

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.

This rapid change in species that rarely leaves behind fossil evidence is referred to as