science

123456789101112131415161718
Across
  1. 3. a supply of energy that can be used to make electric power
  2. 5. where trees live
  3. 7. when more than one species relies on the same limited resources
  4. 9. a self-contained living thing
  5. 10. all living matter on earth
  6. 12. a group of interacting species
  7. 14. not replaceable by natural means
  8. 15. replaced by natural means
  9. 16. living thing that affects an ecosystem
  10. 17. collects underground soil and cracks
  11. 18. weathering erosion or plate tectonics
Down
  1. 1. an animal that eats primary consumers
  2. 2. gets energy by feeding on producers
  3. 4. nonliving thing that affects an ecosystem
  4. 6. supply that benefits organisms
  5. 8. something that is in needed by organisms thats not in abundance
  6. 11. layer of gas surrounding a planet
  7. 13. resources that exist without human intervention