Earth day

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Across
  1. 1. variety of plant and animal
  2. 3. a course or principle of action adopted or proposed by an organization or individual
  3. 7. knowledge or perception of a situation or fact
  4. 8. put into effect
  5. 9. relating to the natural world
  6. 10. Earth day movement was backed by this man
Down
  1. 2. cutting down of trees
  2. 4. the condition of being populated with excessively
  3. 5. come together in order to support a person or cause
  4. 6. use up the supply or resources of