Geological evidence suggests that many millions of years ago,the Amazon basin drained toward the west rather than the east.What caused this drainage reversal?
A)a rise in the global sea level
B)a lowering in the global sea level
C)the rise of the Andes Mountains
D)global climate change

Question

Quizplus · Accepted Answer

The rise of the Andes Mountains caused the drainage reversal. As the Andes Mountains rose, they blocked the westward flow of water, causing it to reroute eastward toward the Atlantic Ocean. This is supported by geological evidence such as the presence of sedimentary deposits that show the direction of ancient river channels.

Geological Evidence Suggests That Many Millions of Years Ago,the Amazon