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Question
Why is the hole in the ozone greatest over Antarctica?A) The ozone hole is a natural phenomenon related to high polar stratospheric clouds.
B) South American countries have not ratified the Montreal Protocol and continue to release ozone-destroying CFCs.
C) Chlorine freed from CFCs elsewhere migrate to the Antarctic region, where they are trapped by the polar vortex.
D) Ozone, a greenhouse gas which traps ultraviolet energy radiated from the Earth's surface, has highest concentration in Antarctica.
Answer
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Related questions
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The key idea behind the scientific method is
A) the use of intuition in testing theories.
B) an appeal to supernatural explanations when natural explanations have not yet been found for a phenomenon.
C) the testing of ideas through controlled observations and experiments.
D) unbridled speculation about the world.
Q:
Which of the following is the most strongly supported by experimental and observational evidence?
A) speculation
B) hypothesis
C) educated guess
D) theory
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Relative to the five fundamental themes of geography, the Cienega de Santa Clara, an ecotourism destination on the Colorado River delta, is best described within which of the five themes?
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B) place
C) human-Earth relationships
D) movement
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A) is behavioral analysis.
B) involves spatial analysis.
C) uses chronological organization.
D) is field work.
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A) place memorization.
B) the study of rocks.
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In order to study the planetesimal hypothesis, astronomers study this process in other parts of the Galaxy.
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Earth is closest to the Sun in early January.
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The Solar System, Sun, and Earth formed about 4.6 billion years ago.
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The longest days of the year in the Southern Hemisphere are experienced during the Northern Hemisphere's
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B) Spring equinox.
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Distinguish between active and passive remote sensing, and describe the applications of each.
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C) It is not connected to the overlapping inorganic spheres.
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Which of the following is true of the biosphere?
A) It is never referred to as the ecosphere.
B) It exists on other planets in the solar system.
C) It is not connected to the overlapping inorganic spheres.
D) It extends from the floor of the oceans to 8 km (5 mi.) into the atmosphere.
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B) graphic
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A scale given as "one centimeter to one kilometer" is an example of a
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B) graphic scale.
C) written scale.
D) relative scale.
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The transformation of a spherical global to a 2D surface is a
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B) cone.
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B) graphic scale.
C) written scale.
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A) a small circle.
B) a great circle.
C) a prime meridian.
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A) earlier than
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