Scientists know a great deal about the processes that shape Earth's surface because they follow the principal of uniformitarianism, which states that geologic processes that operate today also operated in the past.
Think about a mountain and how it may change over the next thousand years.
Choose the words that correctly complete each sentence.

1. scientists know that the mountain will?
A. Become a volcano
B. experience deposition
C. experience weathering
D. not change that soon

2.this is because landforms
A. Are constantly building up
B. undergo the same process
C. are unpredictable
D. are all different