In the continental annual cycle of carbon exchange most of the carbon (measured in gigatonnes) is returned in the atmosphere during ___________.
A) fossil fuel burning
B) photosynthesis
C) wildfire
D) land cleaning
E) decaying of organics
Correct Answer:
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Q1: Weather and climate processes and disasters are
Q3: When meteorologists talk about the average temperature
Q4: All choices below are correct about this
Q4: Which of the following greenhouse gases accounts
Q7: Likely global climate changes in the 21st
Q8: In this figure the red line shows:
Q9: Looking the planet as a whole,about _
Q10: During the 20th century,the average global surface
Q11: All of these choices are potential effects
Q15: The Older Dryas and Younger Dryas stages
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