4-Ecosystems

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Across
  1. 5. – An organism that gets food by eating others.
  2. 7. – The natural process of change in ecosystems over time.
  3. 11. chain – A simple line showing "who eats who."
  4. 13. – An organism that makes its own food (like plants).
  5. 14. – An organism that eats other organisms.
  6. 15. – The total amount of living material in an area.
  7. 16. – The variety of life in an area.
Down
  1. 1. – An organism that breaks down dead matter.
  2. 2. web – A system showing how energy flows between organisms.
  3. 3. level – A step in a food chain or web (producers, consumers).
  4. 4. factor – Something that controls the size of a population (like food or space).
  5. 6. relationship – When one organism hunts and eats another.
  6. 8. capacity – The largest population an environment can support.
  7. 9. – A close relationship between two organisms (can help, harm, or not affect).
  8. 10. – An organism that makes food using sunlight or chemicals.
  9. 12. pyramid – A diagram showing energy transfer in an ecosystem.