The World's Population Increased So Rapidly from 1800 to the Present

question 245

Multiple Choice

The world's population increased so rapidly from 1800 to the present day because of higher

• A) birthrates and lower standards of living.
• B) standards of living and higher birthrates.
• C) standards of living and lower death rates.
• D) death rates and higher standards of living.

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Definitions:

Catecholamines

Organic compounds, including epinephrine (adrenaline), norepinephrine, and dopamine, that function as neurotransmitters and hormones in the body.

Myelin Sheath

The fatty covering around nerve fibers that increases the speed and efficiency of electrical signal transmission in the nervous system.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, consisting of a cell body, dendrites, and an axon.

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brain, the major conduit for information traveling between the brain and the rest of the body.