Why Might a Several-Week Rise in the Mississippi or Missouri

question 50

Multiple Choice

Why might a several-week rise in the Mississippi or Missouri River cause earthen levees (built of soil and sediment) along the riverbanks to fail?

• A) The water tables in the levees would rise with the rising river levels
• B) Floodwaters would drown plants on the levee banks, kill the plants and roots, and thereby decrease the soil-binding effects of the plant roots on the levees.
• C) Rains would wash away the levees.
• D) All of the above are correct.

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Definitions:

Mastery Orientation

An approach to tasks and challenges with a focus on learning, growth, and development of competency.

Adaptive Behavior

Adjustments or changes in behavior that enable a person to meet environmental demands or to cope with changes in the environment.

Industry Over Inferiority

The fourth stage of Erik Erikson’s psychosocial development theory, occurring during childhood, where the focus is on achieving competence in skills.

Erik Erikson

A psychologist known for his theory on the psychosocial development of human beings, which outlines eight stages from infancy to adulthood.