What do most scientists believe is leading to climate change today?
a. more volcanic and earthquake activity
b. rising temperatures on the sun
c. increased amounts of greenhouse gases in the atmosphere
d. changes in the earth’s orbit

A substantial majority of those who are qualified to evaluate the
evidence and formulate an opinion on the subject conclude that
human activity since the Industrial Revolution is largely responsible
for the climate change that is in progress, specifically through increased
amounts of greenhouse gases in the atmosphere.