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15 Mar 2019
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Every response is worth 2 points each, unless otherwise noted. Identify whether each following term is a carbon sink or a carbon source. Write (a) for each sink and (b) for each source. _________ (true or false) ice cores are used to tell us about climate change in the past 0. 4 ma. _________ (true or false) climate change can happen naturally. _________ (true or false) greenhouse gasses are a good thing. _________ (true or false) temperatures are increasing by several degrees c every year. _________ (true or false) snowball earth is a time when the entire earth was covered in ice. _____volcanos: the presence of greenhouse gases provides sufficient atmospheric pressure to make winds, the presence of greenhouse gases offsets the influence of volcanic gases, the presence of greenhouse gases keeps earth warm enough to sustain life. _____major volcanic eruptions seem to cause drops in global temperatures.

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