Which of the following is an important antioxidant?

A) vitamin A
B) vitamin D
C) vitamin E
D) vitamin K


C

Environmental & Atmospheric Sciences

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Which of the following is the smallest grain size category for clastic particles?

a. sand b. gravel c. silt d. clay

Environmental & Atmospheric Sciences

Where are the highest elevations found in China?



A) the eastern coastal region
B) Taiwan
C) Manchuria
D) Tibet
E) the loess plateau frontier with Mongolia

Environmental & Atmospheric Sciences

The area shown on this cross section will experience subsidence from groundwater withdrawal. Which of the following statements is likely to be true about the subsidence?



A) The amount of subsidence will be constant across the area.
B) The aquifer will regain its porosity once the water is replaced.
C) The subsidence can be reversed (undone) by pumping in saltwater.
D) None of these are correct.

Environmental & Atmospheric Sciences

The existence of water vapor can:

A) increase atmospheric pressure. B) decrease atmospheric pressure. C) cause winds to be stronger. D) increase the density of a sample of air.

Environmental & Atmospheric Sciences