Earth Cycles Review

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Across
  1. 1. Photosynthesis, cellular respiration, and burning fossil fuels are all processes that cycle the element __________ through earth.
  2. 4. Living things, such as plants, animals, and decomposers are _________ factors in an ecosystem.
  3. 5. Plants loose water through this process.
  4. 8. True or false: Consumers can get the nitrogen they need by breathing it in from the atmosphere.
  5. 10. These organisms breaks down wastes and remains, as well as return inorganic molecules that can be re-used.
Down
  1. 2. Living in plant roots and in soil, these microscopic organisms fix nitrogen so it can be used by plants.
  2. 3. This element can be found in DNA and proteins.
  3. 6. this reservoir is not part of the phosphorous cycle, but is filled with carbon dioxide, water vapor, and gaseous nitrogen.
  4. 7. Describes an organism's "place" in an ecosystem, determined mainly by habitat and how food is obtained.
  5. 9. This is the main reservoir in the phosphorous cycle (not the actor, mind you).