A meandering river is flowing in a broad, alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel. The government decides to build a dam across the valley for power and flood control
What will happen to the river downstream of the dam?
A) The river will not change.
B) The trapping of silt in the reservoir will change the river to a braided stream because it will only have sand and gravel in its sediment load.
C) The river will respond to the new temporary base level and cut laterally outside its valley, widening the valley.
D) The river will start to deposit sand and gravel, frequently spilling out of its channel.
B
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Which of the following statements is TRUE regarding the socioeconomic situation in Malaysia?
A) Malaysia is the recipient of well-educated citizens of other Southeast Asian nations who lose them to Malaysia as a result of the "brain drain." B) The Bumiputra policies were promulgated to assist the economically disadvantaged Chinese and Indian minority populations of Malaysia. C) Ethnic Malays tend to be better educated and wealthier than the Chinese and Indian minorities. D) Malaysia's industrial wealth is concentrated in the hands of the Chinese minority. E) Tribal peoples within Malaysia have some of the highest levels of education and wealth.
The cheapest and most effective way to reduce water pollution is to use technology to separate wastes for nonpoint sources.
Answer the following statement true (T) or false (F)
Why does groundwater discharge to Earth's surface?
A. Earth's surface is regular, and permeability decreases with depth within Earth. B. Earth's surface is irregular, and permeability increases with depth within Earth. C. Earth's surface is regular, and permeability increases with depth within Earth. D. Earth's surface is irregular, and permeability decreases with depth within Earth.
One would expect a cP air mass to be:
a. cold and dry. b. cold and moist. c. warm and dry. d. warm and moist.