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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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
Land that cannot be cultivated will not be productive for other uses.
Answer the following statement true (T) or false (F)
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
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