Volcanic island chains forms over hot spots when the
A. tectonic plate carrying the volcanoes travels over the stationary hot spot.
B. hot spot expands.
C. hot spot travels.
D. all of these
Answer: A
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Source reduction is the preferred "last resort" for pollution prevention.
Answer the following statement true (T) or false (F)
An environmental impact statement is required ________
A) to be put to voters on every local ballot if federal action may affect local environments B) for any federal action that may affect U.S. environmental quality C) before Congress can pass any law D) only by executive order E) for implementation of any program funded by the World Bank
Large-scale karst topography occurs primarily in ____
a. North Dakota b. the north-central Mediterranean region c. Russia d. Antarctica
What causes most places on Earth to have seasons?
a) Earth is closer to the Sun in the Northern Hemisphere summer and farther away in the Northern Hemisphere winter. b) The spin axis is tilted 23.5. degrees to the plane of Earth's orbit, causing solar radiation to vary in angle as Earth revolves around the Sun. c) The spin axis changes with tilt, causing winter when the tilt is great and summer when the tilt is small. d) Days are longer during summer than winter, so the extra sunshine causes it to be warmer in summer and less sunshine causes it to be colder in winter. e) There is more ice in winter, so it is colder, and less in summer, when it is warmer.