Carbon-Oxygen and Nitrogen Cycles: Respiration, Photosynthesis, and Decomposition (Heinemann Infosearch)

All living things need carbon, oxygen, and nitrogen. From the tiniest bacteria to huge rainforests, find out how these elements are always being made, used, and recycled in the environment. Find answers to these questions and more: What happens to all the leaves in Fall? Can plants make their own food? How do animals get energy from the Sun?