Year 7 Revision, Autumn

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Across
  1. 4. A species that tells us how polluted the environment is
  2. 5. A food chain with many branches
  3. 7. Used to help crops grow on farms
  4. 8. Something that hunts another animal
  5. 11. The process of algae blooming and causing dead zones in a lake
  6. 13. The organisms and the environment in an area
  7. 16. The type of farming that is sustainable
  8. 17. This thing means 'is eaten by' in a food chain
  9. 19. The place that organisms can inhabit
  10. 21. The removal of trees from a forest
  11. 22. The place that an animal lives
  12. 23. An organism that only eats meat
Down
  1. 1. The type of farming that makes the most profit
  2. 2. The first organism in a food chain
  3. 3. The differences in living things in an ecosystem
  4. 6. Something that is hunted by another animal
  5. 9. Something that eats another organism
  6. 10. A slight change within a species
  7. 12. Something that helps an organism survive
  8. 14. The thing that is passed on in food chains
  9. 15. To take the number of organisms in an area
  10. 18. An organism that only eats plants
  11. 20. Used to kill insects on crops