permafrost
Example Sentences
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Because the microbes favor fresh marine material, older carbon from thawing permafrost may contribute less to atmospheric greenhouse gas levels than scientists once feared.
From Science Daily ● Aug. 3, 2026
"However, we do need further research here. This is because some of the organic carbon from the permafrost may already have been broken down before it reaches the seabed."
From Science Daily ● Aug. 3, 2026
"We found that river CO2 emissions decline while carbon uptake through rock weathering increases as permafrost cover decreases," said Liwei Zhang, biogeochemist at East China Normal University.
From Science Daily ● Jun. 20, 2026
A study published in Nature suggests that thawing permafrost may have an unexpected effect on the carbon cycle.
From Science Daily ● Jun. 20, 2026
The tundra had once been covered in a permanent layer of hard frozen soil, called permafrost.
From "The Wild Robot Protects" by Peter Brown
Vocabulary lists containing permafrost
Physical Geography - Introductory
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Physical Geography - Middle School
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Physical Geography - High School
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