Which of these has not been noted as an indicator of recent global warming?
A) the increased frequency of volcanic eruption since the industrialization of human society
B) changes in the volumes of glaciers
C) the southerly limits of Arctic permafrost
D) increased water vapor in the atmosphere

Question

Quizplus · Accepted Answer

Increased frequency of volcanic eruption is not an indicator of recent global warming. In fact, volcanic eruptions can have a temporary cooling effect on the Earth's surface due to the release of sulfur dioxide and other particles that reflect sunlight. The other options (B, C, and D) are all indicators of recent global warming, including changes in glacier volumes, southerly limits of Arctic permafrost, and increased water vapor in the atmosphere.

Which of These Has Not Been Noted as an Indicator