Historical measurements of the average surface temperature of the Earth have shown an accelerating pace since
A) 1850
B) 1900
C) 1940
D) 1980

Question

Quizplus · Accepted Answer

Historical measurements show that the average surface temperature of the Earth has been rapidly increasing since 1980. Prior to this, there were fluctuations in temperature, but it was not until the 1980s that a clear and continuing trend emerged. This is due to increases in greenhouse gas emissions from human activities such as burning fossil fuels and deforestation.

Historical Measurements of the Average Surface Temperature of the Earth