The 2013 IPPC report stated that most global warming is ____ due to human activities raising greenhouse gases.

Question

Quizplus · Accepted Answer

The 2013 IPPC report states that it is "extremely likely" that human activities, particularly the burning of fossil fuels, are the dominant cause of global warming since the mid-20th century. "Extremely likely" is defined by the report as having a probability of 95-100%. Therefore, the answer is choice A, "virtually certain."

The 2013 IPPC Report Stated That Most Global Warming Is