Question

Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming?
a.
Pollution began reflecting sunlight and heat rather than absorbing it.
b.
Evidence of global warming became overwhelming.
c.
Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.
d.
Congress required scientists to assign a cause to global climate change.


Please select the best answer from the choices provided

A
B
C

Answer 1

B

Scientific understanding changed as more evidence accumulated showing greenhouse gases (from pollution) trap heat, so the consensus shifted from a cooling concern to recognizing human-caused warming.