The cost of natural disasters is ____.?

a. ?increasing steadily each year due to population growth
b. ?increasing steadily each year due to economic growth
c. ?variable from year to year due to the unpredictability of natural disasters and their effects
d. ?increasing steadily each year due to population and economic growth
e. ?decreasing steadily each year due to improved forecasting and public awareness


ANSWER: c

Environmental & Atmospheric Sciences

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Which of the following is NOT one of the four largest cities, with respect to population, of the North American region?

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What was the cause of flooding in the 1993 upper Mississippi River flood?

A) Heavy snowmelt in Canada sent large volumes of water down the river in the spring. B) A dam failed because it had been built in a risky place near a fault. C) Persistent thunderstorms caused large amounts of rainfall over a several-state region. D) Winter produced rain that melted snow that was on the ground.

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In the later portion of the 15th century (prior to European arrival) it is estimated that somewhere around 75 million Native Americans inhabited the Latin American region

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Suppose a pilot balloon rises at a rate of 100 metres per minute and disappears into a deck of stratus clouds 1500 metres thick in 5 minutes. Which of the following gives the ceiling of the cloud layer?

A. 1500 m B. 100 m C. 500 m D. 300 m

Environmental & Atmospheric Sciences