Which One of the Following Best Fits with Floodplain Widening

question 73

Multiple Choice

Which one of the following best fits with floodplain widening?

• A)youthful stream; downcutting and waterfall retreat
• B)old age stream; rapid erosion of a delta
• C)mature stream; lateral cutting and point bar deposition
• D)stream rejuvenation; downcutting and meandering

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Definitions:

Calcium Carbonate

A chemical compound with the formula CaCO3, commonly found in rocks as the minerals calcite and aragonite and is the main component of pearls and the shells of marine organisms.

Clay

1. Any fine-grained sedimentary particle that is finer than 1/256 mm. 2. A family of finely crystalline, hydrous-silicate minerals with a two- or three-layered crystal structure.

Calcium Carbonate

A chemical compound found in rocks as the minerals calcite and aragonite, and is the primary component of shells of marine organisms, snails, and eggs.

O-Horizon

The uppermost layer of soil, primarily composed of organic matter, including decomposed leaves, twigs, and other plant material.