Earth day

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Across
  1. 3. Home of wild animals.
  2. 5. They are first living being.
  3. 6. Its third planet in solar system.
  4. 7. they are the most important living being.
  5. 8. Artificial home of animal.
Down
  1. 1. A green color pigment.
  2. 2. Its small mass of land.
  3. 4. Its a gas which harm our planet.