Earth Day 3

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Across
  1. 6. The main renewable energy sources are wind, solar and _____ .
  2. 7. The release of harmful substances into the environment.
  3. 9. The fossil fuels are coal, oil and ____.
Down
  1. 1. A young Swedish environmental activist.
  2. 2. Energy produced by the sun.
  3. 3. Too much waste ends up here.
  4. 4. The three Rs are reduce, reuse and _____ .
  5. 5. A layer of the Earth's starosphere that absorbs the sun's radiation.
  6. 8. A material that takes hundreds of years to break down.