The two main categories of mitigation options for limiting climate change are controlling the CO2 content of the atmosphere and ________.
A. managing the solar radiation received by Earth
B. changing Earth's orbital parameters
C. controlling the motion of tectonic plates
D. limiting the energy output of the Sun
E. reducing our dependence on nuclear energy
Answer: A
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A group that is ethnically __________ and follows the Sunni division dominates northern Iraq.
a. Muslim b. Persian c. Arab d. Kurdish e. Turkish
Magenta light is really a mixture of
A) red and blue light. B) red and cyan light. C) red and yellow light. D) yellow and green light. E) none of the above
What are the two paths that rainfall can take after it reaches the land surface?
What will be an ideal response?