Let

question 30

Multiple Choice

Let

• A)The answer in (a)is bigger than (b).
• B)The answer in (a)is smaller than (b).
• C)They are the same.

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Definitions:

Canyon Feature

A deep gorge, usually with a river flowing through it, formed by long-term erosion from water activity.

Lava Flow

The movement of molten rock that emerges from a volcano or fissure onto the Earth's surface, where it solidifies as it cools.

Dike Unit

It is a geological structure consisting of a major vertical or steeply-dipping sheet-like body of intruded igneous rock that cuts through older rocks.

Half-Lives

The period of time it takes for a radioactive substance to decrease to half its original amount.