Which soil horizon may be red in color and contain clay?

A) O horizon
B) A horizon
C) C horizon
D) B horizon


Answer: D

Environmental & Atmospheric Sciences

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________ waves travel only through solids; on reaching liquid or gas, the wave energy is reflected back into rock or is converted to another form.

A. S B. Rossby C. P D. Q

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After a cold front passes, which of these does NOT usually occur?

A) falling barometer B) marked temperature drop C) clearing skies D) wind direction shift

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Which of the following Gray whales are the first to migrate south?

A) Immature females B) Immature males C) Mature males D) Non-pregnant mature females E) Pregnant females

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Currently there is extensive recycling of which of the following polymers?

A) low-density polyethylene B) polystyrene C) poly(vinyl chloride) D) none of these

Environmental & Atmospheric Sciences