Photosynthesis

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Across
  1. 1. the leaf is part of the _____ system
  2. 3. a chemical that makes leaves green
  3. 8. the process where plants make food
Down
  1. 2. a gas given out by plants
  2. 3. dioxide, a gas needed by plants to photosynthesize
  3. 4. tiny _____ under the leaves are called stomata
  4. 5. _____ energy from the Sun is needed for plants to make food.
  5. 6. the function of the leaf is to make _____
  6. 7. a material taken by plants for photosynthesis