Plants

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Across
  1. 4. it has no main root
  2. 6. it grows under the ground
  3. 7. green plant use as a source of energy to produce their food
Down
  1. 1. a gas present in small quantity in the atmosphere
  2. 2. Plant cannot make their food without
  3. 3. It is a long thick root attached to the stem
  4. 5. it grows above the ground