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Carbon Cycle Diagram (Grade 9)

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Carbon Cycle Diagram

Use the diagram of the carbon cycle to answer the questions.
Carbon Cycle Withou Text Labels
1. 
Which two letters represent reservoirs that are primarily carbon sinks?
  1. F and D
  2. I and C
  3. C and F
  4. D and I
2. 
Which two letters represent reservoirs that are mainly carbon sources?
  1. F and D
  2. I and C
  3. C and F
  4. D and I
3. 
Which is an example of a human activity that adds carbon dioxide to the atmosphere?
  1. C
  2. D
  3. F
  4. K
4. 
Which processes are shown by letters D and G?
  1. D is photosynthesis and G is respiration
  2. D is decomposition and G is evaporation
  3. D is respiration and G is decomposition
  4. D is evaporation and G is photosynthesis
5. 
Which letter represents where carbon dioxide is exchanged in the lithosphere?
  1. A
  2. G
  3. I
  4. L
6. 
The largest carbon reservoir is represented by letter
  1. A
  2. D
  3. I
  4. L
7. 
If the average temperature of the body shown by I increased, it would
  1. release more carbon dioxide into the atmosphere
  2. absorb more carbon dioxide from the atmosphere
  3. not change the fluctuation rate of carbon dioxide with the atmosphere
8. 
Historically, which of the following has been the primary source of carbon dioxide in the earth's atmosphere?
  1. A
  2. C
  3. F
  4. I
9. 
If a forest fire was shown on a diagram, it would represent a carbon                      through the process of                     .
  1. sink; decomposition
  2. sink; photosynthesis
  3. source; respiration
  4. source; combustion
10. 
Which of the letters below represent something that will decrease atmospheric carbon dioxide levels?
  1. C
  2. D
  3. F
  4. G
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