reignwilliams42 reignwilliams42
  • 02-05-2018
  • Biology
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This is a is a natural substance that cannot be re-made, re-grown, or regenerated as fast as it is used.

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gustyduck gustyduck
  • 02-05-2018
Fossil Fuels is a perfect example
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blumberg blumberg
  • 02-05-2018
Random guess, but oil/coal? It takes millions of years to form and people are using it up really quickly
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