Natural Resources v2

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Across
  1. 3. the energy released during nuclear fission or fusion, especially when used to generate electricity
  2. 4. a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane
  3. 8. a form of rain that is unusally acidic, meaning that it has elevated levels of hydrogen ions
  4. 10. naturally occurring water that is not salty, and is suitable for consumption if clean or processed
  5. 11. the introduction of harmful materials into the environment
  6. 12. thermal energy in the Earth's crust
  7. 13. the draining away of water (or substances carried in it) from the surface of an area of land
  8. 14. a silvery white, weakly radioactive material
  9. 16. a group of wind turbines in the same location used to produce electricity
  10. 19. the process of claiming something back
  11. 20. capable of being renewed
  12. 21. a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities
Down
  1. 1. the science, art, or practice of cultivating the soil, producing crops and raising livestock
  2. 2. the action of clearing a wide area of trees
  3. 5. radint light and heat from the Sun that is harnessed to generate electricity
  4. 6. the generation of electricity using flowing water
  5. 7. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
  6. 9. a brown deposit resembling soil, formed by the partial decomposition of vegetable matter in wet acidic conditions
  7. 15. organic matter used as a fuel, especially in a power station for the generation of electricity
  8. 17. a large area covered chiefly with trees and undergrowth
  9. 18. a naturally occuring solid material from which a metal or valuable mineral can be profitably extracted