Biology

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Across
  1. 2. a linear sequence of organisms,which nutrients and energy pass around as one organism eats another
  2. 6. the variety of life in the world/habitat/ecosystem
  3. 7. colorless gas that is necessary for most plant and animal life
  4. 9. animal that naturally preys on others
  5. 11. provides sunlight, life and warmth
  6. 12. best teacher
  7. 14. community of organisms and their environment
  8. 16. a large area with a specific climate and certain types of living things
  9. 18. animal that feeds on plants
  10. 19. tiny, single-celled organisms
  11. 20. animal that eats both plants and meat (animals)
Down
  1. 1. living factore
  2. 3. animal that eats meat (animals)
  3. 4. clear, colorless, odorless, and tasteless liquid essential for most living things to survive
  4. 5. a network of interconnecting food chains in an ecological community
  5. 8. substances that is essential for growth and maintenance of life
  6. 10. organism that breaks down organic material (fungi/bacteria)
  7. 13. non-living factors
  8. 15. individual living thing
  9. 17. animal that is hunted and killed by another for food