What is needed for cellular respiration to occur? there's more than one answer. a. water b. oxygen c. carbon dioxide d. sunlight e. glucose

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

Which of the following explains why a tree is often used as a model to represent the principle of common descent