The Biosphere & Food Webs

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Across
  1. 6. an organism that feeds on producers
  2. 8. this Earth sphere is needed to provide oxygen and carbon dioxide to living things
  3. 10. this Earth sphere is needed to provide water to living things
  4. 12. an organism that feeds on other animals
  5. 13. the study of the relationships between different forms of animals and their natural surroundings
Down
  1. 1. a relationship between two species where both species benefit from their interaction with each other
  2. 2. used to model the transfer of energy and matter in an ecosystem
  3. 3. this Earth sphere is needed to provide soil for plants
  4. 4. all the parts of Earth where organisms are able to live,along with all of Earth's living things
  5. 5. an organism that feeds on dead organisms
  6. 7. the natural environment of a plant or animal
  7. 9. an organism that produces its own food
  8. 11. the initial source of energy for the biosphere