Sc 7: pp 364-371

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Across
  1. 3. energy cannot be created or destroyed
  2. 5. eat primary consumers
  3. 7. movement of nitrogen between the environment and living things
  4. 9. describes how water travels from Earth's surface to the atmosphere and back
  5. 10. breakdown of dead organisms and wastes
  6. 11. burning of materials, including wood and fossil fuels
  7. 14. mass cannot be created or destroyed
Down
  1. 1. ability to do work and enables organisms to use matter and in life processes
  2. 2. carbon moves through organisms and between organisms and the physical environment
  3. 4. formed from decomposing organisms that were buried deeply millions of years ago
  4. 6. tool that can be used to trace the flow of energy through an ecosystem
  5. 8. process in which the soil is able to fix nitrogen gas into forms that plants can use
  6. 12. the amount of energy available and population size _____ as you go up the energy pyramid
  7. 13. anything that has mass and takes up space