Environmental Systems

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Across
  1. 2. Earth's major reservoir of carbon in the form of carbon dioxide.
  2. 6. rocks or soil is broken down, transporting phosphorus across land or into water
  3. 9. organic material breaks down, returning organic phosphorus to the soil
  4. 10. burning fossil fuels such as coal and oil
Down
  1. 1. A bright yellow in color element that has a really bad smell; man has been using this element for thousands of years. Found near volcanoes and hot springs.
  2. 3. Carbon enters the biotic part of the ecosystem
  3. 4. Water that flows across the land and enters rivers and streams. It eventually flows into lakes and the ocean.
  4. 5. Rain, snow, sleet, or hail that falls from clouds to the Earth's surface.
  5. 7. The change of state from a gas to a liquid.
  6. 8. animal waste returns organic phosphorus to the soil