Buying a hybrid car and replacing a few lightbulbs with compact fluorescents will be enough to
reverse global warming. Indicate whether the statement is true or false.
F
Environmental & Atmospheric Sciences
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The urban system of which country is NOT centered around a primate city?
A) United States B) England C) France D) Mexico E) Argentina
Environmental & Atmospheric Sciences
Communications and weather satellites always appear at the same place in the sky. This is because these satellites are
A) beyond the pull of Earth's gravitational field. B) moving at a speed just short of escape velocity. C) orbiting Earth with a 24-hour period. D) stationary in space. E) none of the above
Environmental & Atmospheric Sciences
How many elements make up most of Earth's crust?
A) 4 B) 12 C) 40 D) 100
Environmental & Atmospheric Sciences
Who led a fleet of at least 317 during the dark ages?
a. Bjarni Herjulfsson b. Prince Henry c. Admiral Zheng He d. Christopher Columbus
Environmental & Atmospheric Sciences