In the middle latitudes of the Northern Hemisphere, the day with the shortest number of daylight hours occurs on ____
A) June 21
B) December 21
C) September 22
D) January 1
B
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About what percentage of people in South Asia live in cities?
A) just over 10% B) more than 75% C) nearly 35% D) nearly 65% E) approximately 50%
The mechanism for continental drift was proposed early on and widely accepted by scientists in both the United States and Europe.
a. true b. false
Climate scientists have concluded that most of the recent warming of Earth is due to ____
A) landmasses concentrated in middle and high latitudes form more ice sheets B) an enhanced greenhouse effect caused by increasing levels of greenhouse gases, such as CO2 C) an increase in volcanic activity that vents massive quantities of CO2 into the atmosphere D) variations in the shape of Earth's orbit affects the amount of solar energy received by Earth
Urban growth boundaries ________
A) are grid patterns where streets and alleys are laid out at right angles and buildings are grouped into rectangular blocks B) are radial patterns of building cities outward from the city center C) separate neighborhoods from high-density commercial developments D) determine specific areas of land for different uses E) determine where there will be cities and where there will be rural landscapes