According to the passage, in what way did the climate changes in the ice ages differ from the modern ones? A. They occurred naturally over a long period of time B. They were partly intended.
According to the passage, in what way did the climate changes in the ice ages differ from the modern ones?
A. They occurred naturally over a long period of time
B. They were partly intended.
C. They were wholly the result of human activity.
D. They were fully monitored by humans.