Most reptiles are "cold-blooded", otherwise known as ; they use their environment to maintain body temperature.

In which of the following relationships is one organism always benefited while the other organism is always harmed

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.

Which hormone is used by both males and female?