Natural Resources

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Across
  1. 2. a useful item that comes from nature
  2. 4. a liquid that formed millions of years ago that we burn for energy
  3. 6. the use of resources in a way that ensures availability to future generations
  4. 8. a turbine that collects energy from the wind
  5. 9. a resource that is replenished before it can be depleted
  6. 10. a heat source from the earth
  7. 12. the total amount of a certain resource consumed
Down
  1. 1. a resource that is used up faster than it is replenished
  2. 3. the average amount of a certain resource consumed
  3. 5. a barrier to hold back water (used to collect energy from water)
  4. 6. a panel that people install on roofs to collect solar energy
  5. 7. a rock containing a large amount of valuable elements
  6. 11. a mixture of rocks and minerals with living and nonliving parts