What is a primary source of mercury fallout in the U.S. today?

A. Coal-fired power plants
B. No-till agriculture
C. Testing of nuclear weapons
D. Launches of spacecraft


Answer: A

Environmental & Atmospheric Sciences

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On average, each person in the U.S. produces between 4 and 5 pounds of trash every day. Indicate whether the statement is true or false

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Important requirements for hail to form are ________.

A. upper-level cold air creating maximum temperature contrasts B. strong updrafts to keep hailstones suspended while adding coatings of ice onto ever-growing cores C. large thunderstorms with buoyant hot air rising from heated ground D. All of these choices are correct. E. None of these choices are correct.

Environmental & Atmospheric Sciences

Excepting Hong Kong (which is 100% urban) which nation is the most urban in East Asia?


A) Japan
B) South Korea
C) Taiwan
D) China
E) North Korea

Environmental & Atmospheric Sciences

Desert locations cool off rapidly at night due to the high specific heat of sand

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences