Natural resources

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Across
  1. 4. a minerals ability to split easily along flat surface
  2. 9. a resource that cannot be reused or replaced easily
  3. 10. Farming
Down
  1. 1. coal, oil, natural gas, and other fuels that are ancient remains of plants and animals
  2. 2. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
  3. 3. any natural resource (as wood or solar energy) that can be replenished naturally with the passage of time
  4. 5. extracting oil or minerals from the ground
  5. 6. a liquid mixture of complex hydrocarbon compound; used widely as a fuel source
  6. 7. brownish-black materials produced by partial decompostion of plant remains
  7. 8. urban areas that heat up more quickly and retain heat better than non urban areas