The rate of plate movement is only a few ________ per year so climate changes triggered by shifting plates happen on a scale of millions of years.
A) centimeters
B) decimeters
C) feet
D) meters
E) millimeters
Question 2
The opening of Drake Passage about 41 million years ago caused a fundamental reorganization of ocean currents leading to the isolation of ________, which caused it to become much cooler.
A) Africa
B) Antarctica
C) Asia
D) Australia
E) South America