Ecology

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Across
  1. 1. A cycle that provides fresh water for plants and animals on land before draining into seas
  2. 3. A cycle that returns an element from organisms to the atmosphere as carbon dioxide to be used by plants in photosynthesis
  3. 5. Can occur on land, in water, in the air
  4. 6. Features that enable organisms to survive in the conditions in which they normally live
  5. 9. Square frame used to count organisms to estimate a population
  6. 10. A straight line where samples are taken at regular intervals
  7. 11. Interaction of a community of living and non-living parts of their environment
  8. 12. The variety of all the different species of organisms on earth, or within an ecosystem
Down
  1. 2. Non-living factors that can affect a community
  2. 4. Each species in a community depending on one another
  3. 5. Usually a green plant or alga that photosynthesises
  4. 7. Living factors that can affect a community
  5. 8. Consumer that kills and eats other animals