Which of the following is a pollutant at the local scale?
A) carbon dioxide
B) carbon monoxide
C) acid precipitation
D) sulfur oxides
E) chlorofluorocarbons
Answer: B
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Land that cannot be cultivated will not be productive for other uses.
Answer the following statement true (T) or false (F)
Large sections of the earth's crust, called ____, slowly separate, collide, or grind along against each other at the earth's surface.
A. tailings B. mantle C. tectonic plates D. low-grade core E. oceanic ridges
Which feature on this diagram is a hanging valley?
A) 1, the circular depression at the head of the valley
B) 2, a lake in the upper valley
C) 3, a steep ridge
D) 4, a valley that is above the level of the main valley
Sachiko and Fred are having a discussion about the scientific method. Sachiko makes the comment that every time she sees people carrying open umbrellas, she also sees several small car accidents. This is a(n) ________
A) theory about car accidents B) theory about umbrellas C) hypothesis D) observation E) scientific study