When was the modern start of master-planned communities in the United States?
A. 1920s
B. 1990s
C. 1960s
D. 1950s
Answer: C
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Mountain biomes
a. have deep, rich soils b. recover quickly from vegetation loss c. do not affect climate d. have little biodiversity e. may act as sanctuaries for animal species driven from lowland areas
The variation in sea level that can be measured over the world ocean is called ____
A) erosional change B) tectonic change C) dynamic change D) eustatic change
What events caused so much damage along the north coast of Venezuela in 1999?
A. A landslide shook loose a large piece of the mountains that caused the water in the reservoir to flood local towns. B. Overgrazing caused a loss of grass cover and resulted in severe soil erosion. C. Torrential rains caused debris flows and flash floods that raced through cities. D. The slow movement of slopes downhill broke apart houses but did not kill any people.
What is meant by the tragedy of the commons?
A. Common societies are disconnected from the natural environment. B. Environmental problems are very common in nature. C. Common people go through tragic environmental problems. D. The self-interest of people results in the destruction of a common or shared resource.