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Across
  1. 3. Energy from the heat of the Earth
  2. 4. The protection and preservation of the environment
  3. 6. The surroundings where living organisms exist
  4. 7. Energy Energy harnessed from the sun
  5. 9. The process of reusing materials to reduce waste
  6. 10. A community of living and nonliving things in an area
  7. 11. Meeting the needs of the present without harming future generations
Down
  1. 1. Power generated from water movement
  2. 2. Gases that trap heat in the Earth's atmosphere
  3. 5. Harmful substances released into the environment
  4. 8. The variety of life in an ecosystem