By 1990,________ Had Become the Largest Source Region of Immigrants

question 61

Multiple Choice

By 1990,________ had become the largest source region of immigrants to the United States.

• A)Mexico
• B)China
• C)Russia
• D)India
• E)none of these

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Definitions:

Physical Stress

The strain on one's body due to external factors or demands, which can be caused by environment, physical activity, or bodily injury.

Body Mass Index

A numerical value derived from a person's weight and height, indicating the fat status of an individual.

Delayed Phase Preference

Change in pubertal hormone levels that causes adolescents’ sleep patterns to shift such that they tend to remain awake late at night and groggy early in the morning.

Melatonin

A hormone that influences sleep.