Through Geologic Time,continents Have Drifted Over the Surface of the Earth,but

question 44

Multiple Choice

Through geologic time,continents have drifted over the surface of the Earth,but each continent has

• A) always been about as large as it is today.
• B) grown by the addition of Precambrian shields.
• C) grown by addition of crustal fragments.
• D) grown by crustal stretching.

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Definitions:

Absolute Threshold

The minimum stimulation needed to detect a particular stimulus 50 percent of the time.

Partially Deaf

A condition where there is significant, but not total, loss of hearing capability.

Hearing Ability

The capability to perceive sound by detecting vibrations through an organ such as the ear.

Improves

Enhances or increases in quality, value, or condition, often used in the context of health, skills, or performance.