Biology

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Across
  1. 2. what cell walls are made from
  2. 4. where respiration takes place
  3. 6. hole in leaf which oxygen and carbon dioxide move in and out of
  4. 7. what happens to enzymes heated to high temperatures
  5. 8. how oxygen gets into a leaf
Down
  1. 1. controls what moves in and out of a cell
  2. 3. the building blocks of protein
  3. 5. chemical reaction that releases energy