U3 Earth Resources L 1-3

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Across
  1. 1. Coal, oil and natural gas are ___ fuels.
  2. 5. Most living things can survive only a few ___ without air.
  3. 6. The fossil fuels we use today were made from these organisms.
  4. 10. The process by which coal, diamonds and granite are extracted from the Earth.
  5. 14. The type of resources that cannot be replaced by natural processes in a human lifetime.
  6. 15. Some renewable energy resources are geothermal, wind, water, biomass and _____.
  7. 16. Loose, weathered material in which plants grow.
Down
  1. 2. About 97% of water on Earth is ____ water.
  2. 3. Something on Earth, that living things use to meet their needs.
  3. 4. Deposits of minerals we mine for profit.
  4. 7. The type of resources that can be replaced by natural processes in a human lifetime.
  5. 8. Fresh ___ is a crucial resource for living things.
  6. 9. Places rich in natural gas and oil were ancient ___.
  7. 11. Deposits found at subduction zones.
  8. 12. Places rich in coal were ____ hundreds of millions of years ago.
  9. 13. It takes 80-400 years to create 1cm of this.