6). True or false, at certain temperatures water can transition directly from va
ID: 159811 • Letter: 6
Question
6). True or false, at certain temperatures water can transition directly from vapor to ice without becoming a liquid first?
7). According to the IPCC Fourth Assessment Report, by the middle of the 21st century the permafrost in the Northern Hemisphere is likely to:
8). When permafrost melts, atmospheric _________ concentrations increase.
9). If all of the ice covering Antarctica were to melt, by how much would the sea level rise?
10). How and where are ice core samples typically taken from ice sheets?
a. TrueExplanation / Answer
6).
Answer: a. True
Reason: The sub-freezing air, water vapor changes directly to ice without first becoming a liquid.
7).
Answer: c. decrease by 20-35%
8).
Answer: b. Carbon dioxide
Reason: Permafrost contains high amount of carbon dioxide than methane. But the methane very dangerous than the carbon dioxide, because methane increases high global warming and will keep the Earth always hot.
9).
Answer: d. 56 meters
10).
Answer: b. As vertical columns in the center of the ablation zone.
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