Currently Humans Are Using About ________ of the Annual Worldwide

question 105

Multiple Choice

Currently humans are using about ________ of the annual worldwide runoff.

• A)30 percent
• B)65 percent
• C)75 percent
• D)84 percent
• E)90 percent

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Definitions:

Molecules

The smallest unit of a chemical compound that can exist, consisting of two or more atoms held together by chemical bonds.

Refractory Period

A period immediately following an action (e.g., a neuron's firing or human ejaculation) during which a second action is difficult or impossible to initiate.

Neuron

A specific type of cell responsible for sending nerve signals; also known as a neuron.

All-Or-None Response

A neuron’s reaction of either firing (with a full-strength response) or not firing.