Submitted by admin on Sat, 05/17/2014 - 19:56
definition:
The process, condition, or result of being covered by glaciers or ice sheets.
sentence:
These hydrogeological conditions are controlled by relative land and sea level, erosion and deposition, the cold climate processes of permafrost and glaciation, and rock stress changes.
difficulty:
medium
toefl frequency:
2
toefl classification: