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Light elements with Z 20 generally have neutron-to-proton ratios about equal to
Income Change
A variation in the amount of earnings received by a person, household, or economic entity over a period.
Inferior Good
A good for which an increase in income reduces the quantity demanded
Good A
A placeholder term typically used in economic models to represent a generic item or service in the market.
Income Falls
A situation where an individual's or group's earnings decrease over a period of time.
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