The Theory of Dark Energy Tells Us That

question 50

Multiple Choice

The theory of dark energy tells us that

• A)empty space is seething with a form of energy.
• B)there is a force that behaves like an anti-gravity.
• C)there is still much to learn about this universe.
• D)All of the above.

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Definitions:

Net Migration Rates

A statistic that calculates the difference between the number of individuals entering a country (immigrants) and leaving a country (emigrants) per 1,000 inhabitants in a given year.

Migration

The movement of people from one place to another with the intention of settling temporarily or permanently in the new location.

Basic Demographic

Fundamental population characteristics such as age, sex, and race used in analysis and policy development.

World Population

The total number of humans currently living on Earth, a figure that is continually monitored and projected.