According to the Textbook, Our Knowledge of the Oceans Is

question 112

Multiple Choice

According to the textbook, our knowledge of the oceans is ________.

• A) now complete
• B) unimportant because humans live on the land
• C) fairly limited until recently
• D) never going to amount to much
• E) equal to our knowledge of the continents

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Definitions:

Absolute Refractory Period

The period immediately following the firing of a nerve fiber when it cannot be stimulated to fire again, no matter how strong the incoming signal.

Action Potential

A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.

Millivolts

A unit of electric potential equal to one thousandth of a volt.

Relative Refractory Period

A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.