In an earlier chapter you learned that geologists are taught that "The Present is the Key to the Past." In studying paleoclimate,why would this idea probably be wrong?
A) because we do not have detailed records of the climate for more than the last 4000 or so years of recorded history
B) because the fundamentals of the carbon cycle have changed
C) because of the decrease in volcanic eruption since the start of recorded history
D) because of the many ways that humans are indirectly or directly affecting climate.

Question

Quizplus · Accepted Answer

The present is not necessarily the key to the past in studying paleoclimate because of the many ways that humans are currently affecting climate, which were not present in the past. This means that past climate patterns may not be directly applicable to the present or future due to the influence of human activities such as greenhouse gas emissions and land use changes.

In an Earlier Chapter You Learned That Geologists Are Taught