Why is the hole in the ozone greatest over Antarctica?

A) The Coriolis Effect produces the ozone hole and is greatest in the polar regions.
B) Ozone, a greenhouse gas which traps ultraviolet energy radiated from the Earth's surface, has highest concentration in Antarctica.
C) South American countries have not ratified the Montreal Protocol and continue to release ozone-destroying CFCs.
D) Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs.
E) The ozone hole is a natural phenomenon related to high polar stratospheric clouds.


D

Environmental & Atmospheric Sciences

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The African honeybee, or killer bee, is a deliberately introduced invasive species

Indicate whether the statement is true or false

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Which option correctly describes an effect of human activity on a river channel?

A) If logging and clearing have increased the sediment load, the channel may fill and the banks may become higher. B) If logging and clearing have increased the amount of runoff, the channel may fill and the banks may become higher. C) If agriculture and building have decreased the amount of runoff, the channel may erode further and the banks will become lower. D) If agriculture and building have increased the sediment load, the channel may erode further and the banks will become lower.

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The layer of the solar atmosphere directly above the photosphere is referred to as the ________

A) ionosphere B) solarsphere C) megasphere D) corona E) chromosphere

Environmental & Atmospheric Sciences