The hole in the ozone layer is primarily due to
A. burning coal.
B. CFCs in the upper atmosphere.
C. automobile exhaust.
D. use of non-CFC aerosols.
Answer: B
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What will be an ideal response?
Name three kinds of carbohydrates that can be built using only glucose monomers
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Depending on the microbe, a pathogen can potentially be spread during _____phases of infection and disease
Fill in the blank(s) with the appropriate word(s).