Geology please help me!!?
(Q004) Part 4.a. Observations of modern mountain belts suggest that ranges erode at rates of 2 mm per 10 years. At this rate, how long would it take to erode the Himalayas down to sea level?
a. 4.4 × 104 yr
b. 4.4 × 107 yr
c. 4.4 × 106 yr
d. 4.4 × 103 yr