Science quiz

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Across
  1. 3. what are some negative impacts on the environment
  2. 5. what provides food for other animals
  3. 6. What are living things?
  4. 8. what breaks down dead or organic stuff?
  5. 9. What is a ecosystem?
  6. 11. what are 2 types of decomposers?
  7. 12. What is 1 type of element is in a ecosystem?
  8. 14. Lifeless areas
  9. 15. to maintain something over a long time?
Down
  1. 1. green what are positive impacts on the environment?
  2. 2. Relies of off producers to survive?
  3. 4. tells who eats who in a ecosystem?
  4. 7. occurs in an area that had previously been inhabited
  5. 10. a variety of life in a ecosystem?
  6. 13. What is a non living things?