Urban areas heat up more rapidly than surrounding countryside. This can result in
A. high pressure over urban areas with polluted air flowing aloft and then the polluted air rising over the surrounding countryside.
B. low pressure over urban areas with polluted air flowing aloft and then the polluted air sinking over the surrounding countryside.
C. high pressure over urban areas with polluted air flowing at the ground surface and then the polluted air rising over the surrounding countryside.
D. low pressure over urban areas with polluted air flowing at the ground surface and then the polluted air sinking over the surrounding countryside.
Answer: B
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The theory that the continents have moved in the past and are currently moving is
a. continental zone. b. continental drip. c. continental drift. d. continentality. e. the continents are not moving.
Judge the following sentence according to the criteria given below: Warmer-than-normal sea surface temperatures stress corals BECAUSE they cannot survive for long when the water temperature exceeds 20° Celsius
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Graphite is a mineral but sugar is not. Why is this so?
A) Sugar is naturally occurring, but graphite is manufactured. B) Graphite has an orderly arrangement of atoms, but sugar does not. C) Graphite is inorganic but sugar is organic. D) Sugar is not an important material for manufacturing.
Sea-floor sediments indicate more climate fluctuations during the Pleistocene than is indicated by land
deposits. Indicate whether the statement is true or false.