Cycles of matter

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Across
  1. 2. Cycle The combustion of coal, oil and natural gas is part of the _________
  2. 4. During ___________ water moves from the atmosphere to the land and ocean
  3. 5. Succession The development of a community on bare, exposed rock is an example of
  4. 7. The recovery of Yellowstone National Park following the fires of 1998 is an example of
  5. 10. All biological molecules contain ___________
Down
  1. 1. Water changes from a liquid to a vapor during
  2. 3. Breaking down matter back into carbon dioxide and water
  3. 4. The first organisms to grow in an area undergoing ecological succession.
  4. 6. Water that soaks into the ground
  5. 8. the process of burning fuel, such as oil
  6. 9. The gradual regrowth or development of a community of organisms over time