When a Dam and Reservoir Are Constructed,the Natural Response of the River

question 115

Multiple Choice

When a dam and reservoir are constructed,the natural response of the river and its channel gradient come under the control of

• A)the same base level that existed prior to construction.
• B)a local,or temporary,base level.
• C)the government.
• D)an ultimate base level.
• E)a calculated base level based on engineering design.

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Definitions:

Renewable Resource

Natural resources that can be replenished naturally with the passage of time, such as sunlight, wind, and biomass.

Migration Rates

The numerical measurement of the movement of people from one region or country to another, often quantified as the number of individuals per thousand or hundred thousand.

Birthrates

The number of live births per thousand of population per year.

Demographers

Experts who study populations, including their sizes, distributions, and trends, by analyzing birth, death, migration, and aging patterns.