Stars Evolve Primarily Because

question 46

Multiple Choice

Stars evolve primarily because

• A) they convert all their mass to energy.
• B) they lose all their mass into space.
• C) their core temperatures decrease steadily as they evolve.
• D) they use up the fuel in their cores.
• E) they run out of rotational energy.

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Definitions:

Weekly Operating Profits

Weekly operating profits describe the earnings a business generates from its normal operations over a one-week period, excluding any income from investments or other non-operational sources.

Short Run

An interval in economic studies where a minimum of one production element remains constant and is unalterable.

Variable Costs

Expenses that change in proportion to the activity of a business.

Short Run

A time period in economics during which at least one input, such as plant size, is fixed and cannot be altered.