war on waste crossword

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Across
  1. 1. Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation.
  2. 4. cycle of Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain
  3. 5. energy derived from natural sources that are replenished at a higher rate than they are consumed
  4. 6. the radiation from the Sun, generating electricity
  5. 8. a process that occurs when gases in Earth's atmosphere trap the Sun's heat
  6. 9. a cycle where carbon dioxide travels from the atmosphere into living organisms and the Earth, then back into the atmosphere
  7. 10. one of the oldest and largest sources of renewable energy, which uses the natural flow of moving water to generate electricity.
Down
  1. 2. a natural resource that is not an endless supply
  2. 3. a resource of which there is an endless supply because it can be replenished.
  3. 7. An energy source formed in the Earth's crust from decayed organic material.