What is formed during photosynthesis and broken down during cellular respiration? a. water b. glucose c. lactic acid d. carbon dioxide

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

The chemical form of energy that is useable by the cell to do work