Global Warming Ch 5.7

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Across
  1. 3. CO2 is converted to these in the process of photosynthesis
  2. 5. Climate change controls are a _________ issue
  3. 7. Theorised to accelerate global warming is the _________ greenhouse effect
  4. 10. A carbon _____ is one way governments seek to control carbon emissions
  5. 13. Considered a greenhouse gas
  6. 16. A carbon ________ scheme is used by some governments to control carbon emissions from businesses
  7. 17. CO2 is converted to these in the process of photosynthesis
  8. 19. Storing CO2 underground in liquid form
  9. 21. Type of acid produced as a waste product by some bacteria
Down
  1. 1. Who ratified the agreement in 2007?
  2. 2. Carbon ________ is the process of growing trees purely for storing carbon
  3. 4. Buying _________ produce can reduce fuel use
  4. 6. Microbiologists are studying how to modify ________ to reduce methane coming from cows
  5. 8. Carbon can be ________ in plants
  6. 9. Many scientists believe heating due to carbon emissions are a result of human _________
  7. 11. Japanese city where the 1997 Protocol was signed
  8. 12. How plants remove CO2 from the air
  9. 14. One way to help reduce landfill
  10. 15. World _______ Research Program
  11. 18. Considered a greenhouse gas
  12. 20. Number of carbon credits per tonne of CO2