How many people live within the danger zone of active volcanoes on Earth?

A. about 500,000
B. about 50,000
C. about 5,000,000


Answer: A

Environmental & Atmospheric Sciences

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The Green Revolution in South Asia relied on traditional varieties of crops

Indicate whether the statement is true or false

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The greatest concentration of UNESCO World Heritage sites is in

A) Europe. B) North America. C) Africa. D) Asia. E) South America.

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What is cyclogenesis?

A. forces creating low pressure B. poleward deflection of winds C. formation of cyclones D. origination of frontal system E. position of the jet stream

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Which of the following would not be found in an alpine glacial valley?

A) paternoster lakes B) hanging valleys C) waterfalls D) esker

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