Photosynthesis and Respiration

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Across
  1. 2. a three-step process in photosynthesis where plants use chemical energy from the light reactions to turn carbon dioxide into sugar
  2. 4. The chemical changes that take place in a cell or an organism
  3. 6. a pigment that gives plants their green
  4. 7. - an organelle within the cells of plants and certain algae that is the site of photosynthesis
  5. 9. dioxide is a gas that acts like a greenhouse when it enters the atmosphere
  6. 10. a clear liquid that cycles between clouds and the Earth's oceans and land
Down
  1. 1. the process of breathing in oxygen and breathing out carbon dioxide, and also the chemical process where living cells release energy from food
  2. 3. without oxygen
  3. 5. chemical process that occurs in plants algae and some types of bacteria when they are exposed to sunlight
  4. 8. a chemical element with an atomic number of 8