Question

Why does plastic flow only occur below 50 meters of ice?

A. It is cold enough below that much ice to cause plastic flow.

B. Basal slip only occurs at depths below 50 meters.

C. Fifty meters of ice can block enough sun to cause plastic flow.

D. It takes the weight of that much ice to cause the plastic flow.

Answer 1

D

Step-by-step explanation:

Answer 2

d

Step-by-step explanation:

it takes the weight of that much ice to cause the plastic to flow.