Environment Puzzle

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Across
  1. 2. , What most solar panels are made of
  2. 5. , Leading cause of greenhouse gas emissions
  3. 6. , Where trash is dumped
  4. 8. , Used to harness energy from wind
Down
  1. 1. , Large grey endangered animal with big nose
  2. 3. , Thin layer in the atmosphere that blocks UV radiation
  3. 4. , Small bear-like animal that is endangered
  4. 7. , Last name of long time advocate for endangered animal protection…known for his documentaries