Carbon Cycle

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Across
  1. 2. a compound that provides energy for biochemical reactions
  2. 7. the green substance in plants that is essential to photosynthesis
  3. 8. a colorless, odorless, gaseous element that is found in air and water. It is necessary for humans, animals and plants to live
  4. 9. the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions
Down
  1. 1. a colorless, odorless gas that is composed of carbon and oxygen. It is absorbed from the air by plants and produced when people and animals breathe out
  2. 3. the process green plants use to turn water and carbon dioxide into food using energy from sunlight
  3. 4. a simple sugar that is found widely in nature and is an important energy source for plants and animals
  4. 5. energy-producing organelles found in nearly all cells of plants and animals
  5. 6. an organelle that serves as the site of photosynthesis
  6. 7. the process that moves carbon between plants, animals, and microbes; minerals in the earth; and the atmosphere