revision plants+animals

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Across
  1. 1. flowers produce this which can be transferred by birds or wind.
  2. 3. animals that hunt other animals for food.
  3. 7. the change of a liquid to a gas
  4. 8. when harmful materials mix with water, soil of air
  5. 9. a characteristic that an organism has to help it survive
  6. 12. the change of a gas to a liquid
  7. 14. a _______ has scaly skin.
  8. 16. water that cannot soak into the ground
  9. 17. Fish use these to breath under water
Down
  1. 1. all food chains start with these.
  2. 2. mammals have this to keep them warm
  3. 3. a group made up of the same type of individuals living in the same ecosystem
  4. 4. is water that falls from the clouds to the earth
  5. 5. Plants with roots, stems and leaves.
  6. 6. water that is stored under ground
  7. 10. a group of different types of organisms in the same place
  8. 11. birds have these to keep them warm
  9. 13. huge piece of frozen water
  10. 15. make their own food