Endangered Species

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Across
  1. 2. A large body of salt water.
  2. 4. A group of similar living things.
  3. 10. When a species no longer exists.
  4. 12. A safe place where animals are protected.
  5. 13. The variety of living things in an area.
  6. 14. A large area covered with trees.
  7. 15. The number of living things in an area.
Down
  1. 1. A community of living things and their environment.
  2. 3. To keep something safe from harm.
  3. 5. Protecting plants, animals and the environment.
  4. 6. Harmful substances that damage the environment.
  5. 7. At risk of becoming extinct.
  6. 8. A large natural stream of water.
  7. 9. Animals and plants living in nature.
  8. 11. The natural home of a plant or animal.