Question

What would best explain why it has taken scientists so long to come to a consensus that greenhouse gas emissions from human activity is leading to climate change?

A.Because there are so many factors involved in climate, it has been difficult to rule out other possible causes.

B.There is no correlation between greenhouse gas emissions and climate change.

C.There is no proposed mechanism for how greenhouse gases would lead to climate change.

D.Scientists couldn't show that increased greenhouse gas emissions preceded rising global temperatures.

Answer 1

still need help?

Answer 2

yeah @Awolflover1

Answer 3

A, the entire world is a huge system to monitor - its very difficult to narrow down something on a scale that large to a few distinct factors.

Answer 4

a