When Organisms Help Those They Recognize as Capable of Returning

question 73

Multiple Choice

When organisms help those they recognize as capable of returning the favor, this is termed:

• A) kin selection.
• B) group selection.
• C) reciprocal altruism.
• D) sociobiology.

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Definitions:

Income Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in consumers' income, holding all other factors constant.

Inferior Good

An inferior good is a type of good whose demand decreases when consumer income rises, unlike normal goods, where demand increases with rising consumer income.

Normal Good

A type of good for which demand increases when income increases, and vice versa, displaying a positive correlation between income and demand.

Cross Elasticity of Demand

A measure of how the quantity demanded of one good responds to a change in the price of another good, indicating the degree of substitutability or complementarity between the two goods.