Earth day crossword puzzle

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Across
  1. 2. we can all make it,no matter how big or little
  2. 5. something very unhealthy for animals and humans alike
  3. 6. it happens when our environment is dirty
  4. 7. what some companies throw in the environment and pollute it.
  5. 8. what happens to animals if there is pollution
Down
  1. 1. what we should do in order to preserve our planet
  2. 3. the planet we live in
  3. 4. it is all around us and includes all animals