Earth Science

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Across
  1. 3. the center of the earth.
  2. 4. the earth's outer layer.
  3. 6. unlimited supply or are easily replenished. can't be replenished.
  4. 7. the study of the earth.
  5. 9. the belief that earth-forming processes are natural.
  6. 11. the boundary between the crust and the mantle.
  7. 12. can't be replenished.
Down
  1. 1. the effort to oversee and control the use of natural resources.
  2. 2. the idea of an ancient earth.
  3. 5. any raw materiel that we use from our environment.
  4. 8. a segment of the upper mantle and the crust.
  5. 10. takes up 84% of the earth's volume.