What cell organelle produces energy in
animal cells?

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

If animal agriculture was eliminated, how much grain would become available for human consumption?

Pulmonary arteries carry highly oxygenated blood. true or false?