The Environment (B2/C1)

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Across
  1. 3. The gradual increase in the Earth's temperature due to greenhouse gases. (2 words)
  2. 6. A natural fuel such as coal or gas, formed from the remains of living organisms. (2 words)
  3. 7. Natural tendencies that make animals behave in particular ways
  4. 9. The variety of plant and animal life in a particular habitat.
  5. 10. The contamination of air, water, or soil by harmful substances.
  6. 12. animals that kill and eat other animals for food
  7. 15. A power source harnessed from the movement of wind.(2 words)
  8. 17. killing animals in a way that is against the law
  9. 19. A material that breaks down naturally without harming the environment.
  10. 20. when animals travel long distances as part of their normal way of life
  11. 21. The process of making new products from used materials.
Down
  1. 1. A gas that contributes to the greenhouse effect, produced by burning fossil fuels. (2 words)
  2. 2. A form of energy from sources that do not deplete or can be replenished. (2 words)
  3. 3. wild animals and birds that are hunted for food or sport
  4. 4. A large mass of ice that moves slowly over land.
  5. 5. The variety of ecosystems within a given region. (2 words)
  6. 8. The natural home or environment of an animal, plant, or other organism.
  7. 11. people who are concerned about protecting animals and the natural world
  8. 13. The destruction of large areas of trees and forests.
  9. 14. A substance that makes land, water, or air dirty and unsafe.
  10. 16. An extended period of unusually dry weather.
  11. 18. when animals produce young