5° Vocabulary #3 Theme 4

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Across
  1. 2. the chemical element of atomic number 6
  2. 4. A resource that has a theoretically unlimited supply and is not depleted when used by humans
  3. 6. measure of the impact human activities have on the environment
  4. 7. A fossil fuel that forms underground from partially decomposed plant material
  5. 8. a natural fuel such as coal or gas, formed in the geological past
  6. 9. A form of energy caused by the movement of electrons
  7. 10. Pollutants that are released into the air
Down
  1. 1. A gradual increase in average global temperature
  2. 3. Situation in which heat is retained in Earth's atmosphere
  3. 5. A gas that is expelled from the body by the respiratory system