Science

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Across
  1. 8. Animals without backbones that are large enough to see without magnification
  2. 9. A flat, two-dimensional map that is a model of the actual three-dimensional shape of a land surface
  3. 10. Solid layer of Earth’s crust and upper mantle
  4. 11. The total amount of matter dissolved in the water from natural geologic sources from mining, sewage, urban runoff, industrial wastewater, or agricultural discharges
  5. 12. Movement of water through air and land
  6. 13. The cloudiness of the water caused by suspended dirt, inorganic and organic matter, and microscopic organisms
  7. 15. A near-shore area of water with little or no dissolved oxygen and, therefore, very few organisms
Down
  1. 1. A weak, soft layer of the mantle
  2. 2. Where two or more lithospheric plates meet
  3. 3. A measure of how well one set of data is related to another
  4. 4. Leftover radioactive material produced by reactors at nuclear power plants
  5. 5. One factor causes an effect on the other factor. The first event is the cause and the result is the effect
  6. 6. The amount of oxygen dissolved in the water that is available for aquatic life
  7. 7. Sections of Earth’s lithosphere
  8. 14. The process of wearing or being worn by long exposure to the atmosphere