Earth Day!

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Across
  1. 2. the layer that protects the earth from the sun
  2. 4. Reduce, Reuse, ____
  3. 6. a gas commonly emitted by cows
  4. 7. these types of farms use worms
  5. 9. the warming of the planet
  6. 10. Make up ~75% of our planet
Down
  1. 1. The destruction of forests
  2. 3. Absorb CO2 and produce oxygen
  3. 5. When a species dies out, it becomes ____
  4. 8. a type of rain that causes environmental harm