The scientific community disagrees about
a. the rate of global climate change
b. the occurrence of global warming
c. the need for action
d. all of the above

The answer is A. the rate of global climate change. While the scientific community agrees that global warming is happening and that there is a need for action, they are in disagreement about the rate at which it is occurring. Some scientists believe that it is occurring at a slow rate, while others believe it is happening at a faster rate.