Grade 4 Unit 6 Review Crossword

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Across
  1. 5. The mix of water, air, very small bits of rock and HUMUS.
  2. 7. Anything from nature people can use
  3. 9. Very small pieces of rock even smaller than SILT.
  4. 10. A resource that can be used up
  5. 11. Waste that harms the land/sea/air.
Down
  1. 1. Saving resources by using them wisely
  2. 2. What plants take in through their roots to live and grow.
  3. 3. Very small pieces of rock you can’t see with your eyes.
  4. 4. The mix of the remains of plants and animals.
  5. 5. Very small pieces of rock you can see with your eyes.
  6. 6. The remains of a living thing used to make energy
  7. 8. A resource that can be replaced easily