Ecological footprint

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Across
  1. 2. another word for materials
  2. 3. in the environment trees and animals are part of it.
  3. 4. biotic surroundings
  4. 6. when you need something it is a _____
  5. 8. to help or assist
  6. 10. to decrease an amount
  7. 11. resources - materials from the environment
  8. 12. affect on something
  9. 14. to use a material again
  10. 15. - to eat or induce something
Down
  1. 1. something (eg plastic) introduced to the environment that has a harmful effect
  2. 4. heat energy is a form of ______
  3. 5. to fail to use materials or not put to good use
  4. 7. the way someone lives
  5. 9. making or manufacturing an item or material
  6. 13. decaying organic matter used for fertilizing