Before the 1980s, chlorofluorocarbons (CFCs) were primarily used as ____.
A. ingredients in fire extinguishers and propellants in aerosol cans
B. coolants in air conditioners and industrial solvents
C. buoyancy gas in blimps
D. ingredients in bleach and propellants in aerosol cans
E. coolants in air conditioners and propellants in aerosol cans
Answer: E
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Fill in the blank(s) with correct word
The expansion and contraction of frost action results in the movement of soil particles, stones, and small boulders into distinct shapes know as
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Which of the following location is severely eroding?
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