Environment

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Across
  1. 2. Dangerous, especially to people's health or safety.
  2. 4. A piece of equipment that uses energy from the Sun.
  3. 5. A type of animal or plant that may soon become extinct.
  4. 10. Used about people who care about the environment.
  5. 11. Using methods that do not harm the environment.
  6. 12. A large machine like a windmill.
  7. 13. The situation when an animal, plant, or language no longer exists.
  8. 15. The process of changing waste materials.
  9. 16. A mixture of decaying plants and vegetables.
Down
  1. 1. Derived from living matter of a previous geologic time.
  2. 3. The increase of trade around the world.
  3. 6. The process of removing the trees from an area of land.
  4. 7. Also called: atomic power.
  5. 8. Energy or natural materials replace themselves by natural processes.
  6. 9. It develops industries or makes them more modern.
  7. 14. A sudden short period of very cold weather.