Unit 4 SBS #14-20 (pg. 361)

14. Since CO2 and water vapor are both greenhouse gases, they would absorb infrared radiation, helping maintain a stable temperature. 

15. a. Natural process: Burning coal and removing trees in forests
          Human activity: Breathing and photosynthesis
      b. Natural process: Decomposition of plants and animals
          Human process: Fossil fuels and livestock

16. a. Increase in greenhouse/atmospheric gases, higher air pressure 
      b. Decrease in greenhouse/atmospheric gases, lower air pressure

17. Greenhouses with transparent glass act the same way greenhouse gases change UV and visible radiation to infrared radiation in clouds and reflects heat energy within Earth. Since the infrared light can't escape glass, a green house with transparent glass is much warmer that one with wood walls.

18. 

a. 

 

b. 

19. Atmospheric CO2 gas, solid calcium carbonate, natural gas and organic molecules.

20. Carbon atoms could be part of the atmosphere as a gas due to photosynthesis. They could be part of the lithosphere due to plant or animal decaying. They could be part of the hydrosphere as limestone.