Big or small, protect them all

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Across
  1. 1. to illegally catch or shoot animals, birds, or fish, especially on private land without permission
  2. 7. an endangered animal, bird, etc is one that may soon no longer exist because there are so few of them
  3. 9. when a particular type of animal or plant stops existing
  4. 11. the natural home of a plant or animal
  5. 12. living in a natural state, not changed or controlled by people
Down
  1. 2. the protection of natural things such as animals, plants, forests, etc, to prevent them from being spoiled or destroyed
  2. 3. animals and plants growing in natural conditions
  3. 4. a domestic animal lives on a farm or in someone’s home
  4. 5. a group of animals or plants whose members are similar and can breed together to produce young animals or plants
  5. 6. to chase animals and birds in order to kill or catch them
  6. 8. to keep someone or something safe from harm, damage, illness, or extinction
  7. 10. when a person or animal is kept in prison, cage, etc and not allowed to go where they want