The solar constant is

A. the same value for all planets, even Neptune.
B. the same for a sphere or for a circle.
C. only about a quarter of all energy emitted by the sun.
D. consistent amount of energy received at the top of the atmosphere.


Answer: D

Environmental & Atmospheric Sciences

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A threshold dose-response model

A. implies there is a dose below which no detectable harmful effects occur. B. errs on the side of safety. C. implies that each dose of a harmful substance carries a risk of causing harm. D. is useful for assessing chronic toxicity. E. assumes chemicals vary widely in their toxicity.

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________ denotes the exposed, crescent-shaped rupture surface at the head of a slump

A) Scoop B) Scarp C) Toe D) Sole

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The Roman Catholic religion has more of a unifying effect in Brazil than the Portuguese language.

a. true b. false

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What type of coal is the most common in the United States?

A. Anthracite B. Lignite C. Bituminous D. Subbituminous

Environmental & Atmospheric Sciences