Pollution concentration is
A) determined solely by the quantity of emissions.
B) determined solely by the wind speed.
C) the quantity of a pollutant found within a specific volume of air.
D) always higher during the day than at night.
Answer: C
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Which of the following conditions is required for frozen dew to form?
A. Dew freezes before forming. B. The minimum temperature must fall to freezing or below. C. The dew point must be below freezing. D. Dew forms during daytime.
The largest marine animals, such as the baleen whales, eat top consumers, such as seals and large fish
Indicate whether the statement is true or false
Throughout history, cities have ________
A) been self-sustaining in food production B) been major sources of labor for the rural areas surrounding them C) destroyed the rural areas surrounding them through conquest or politics D) had disagreements with the rural areas surrounding them E) drawn resources from surrounding agricultural areas
Pangea initially separated into two parts; the southern part is called ________.
A. Laurasia B. Gondwanaland C. Atlantis D. Panthalassa E. Rodinia