Wonders of the living world

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Across
  1. 2. the energy needed for photosynthesis is supplied by
  2. 4. dioxide an essential requirement for photosynthesis is
  3. 6. most of the animal are
  4. 7. the gas emitted during the process of photosynthesis is
Down
  1. 1. the process that creates energy in organisms is
  2. 3. a characteristic which cannot be seen in most plants is
  3. 5. a characteristics that is not common to all living organisms