Global Systems

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Across
  1. 4. A greenhouse gas that is a product of combustion
  2. 8. Earth's natural way of staying warm
  3. 9. Oceans and freshwater make up this
  4. 11. A current driven by differences in salinity and temperature
  5. 14. A type of greenhouse gas
  6. 15. Rocks make up this
  7. 16. Increased temperatures driven by human activities
  8. 17. Living things make up this
Down
  1. 1. Rock made from magma or lava
  2. 2. A measurement of rainfall
  3. 3. Short term state of the atmosphere
  4. 4. Long term average weather patterns over decades
  5. 5. The air makes up this
  6. 6. One product of photosynthesis
  7. 7. One product of photosynthesis
  8. 10. Rock made from layers of small fragments
  9. 12. The movement of warm air rising, being replaced by cooler air
  10. 13. Rock made from other rocks under heat and pressure