Prior to Reaching the Main Sequence,a Protostar's Energy Comes Mostly

question 20

Multiple Choice

Prior to reaching the main sequence,a protostar's energy comes mostly from

• A) gravitation.
• B) nuclear fusion.
• C) nuclear fission.
• D) natural radioactivity.

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Definitions:

Substitution Effect

The economic principle that as the price of a good increases, consumers will replace it with less expensive alternatives.

Normal Good

A product that sees an increase in demand as people's incomes increase, and a decrease in demand when their incomes decrease.

Housing

Refers to the provision and availability of homes and buildings for habitation by individuals and families.

Utility

A measure of satisfaction or happiness that a consumer derives from the consumption of goods and services.