The largest river (in terms of discharge) in the US is the Mississippi River.
a. true
b. false
a. true
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To reduce energy waste, we must
A. increase energy consumption. B. improve energy efficiency. C. switch from fossil fuels. D. use only solar technologies. E. lower energy efficiency.
On equinox,
A) points north of the Arctic Circle receive 24 hours of daylight B) tilt is neither inclined toward or away from the sun C) points south of the Antarctic receive 24 hours of daylight D) points north of the Arctic Circle and Antarctic Circle receive 24 hours of darkness
English is by far the most widely taught second language in non-English speaking European countries, where it is studied by over 90% of secondary school students
Indicate whether the statement is true or false
Collectively, particles of soot, smoke, dust, and pollen are called ____
a. ?hydrocarbons b. ?aerosols c. ?carcinogens d. ?haze e. ?CFCs