The Brain Weight of a Person in His or Her

question 32

Multiple Choice

The brain weight of a person in his or her 80s is about ______ less than that of a middle-aged person.

• A) 25%
• B) 17%
• C) 8%
• D) 1%

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Definitions:

Density Dependent

Elements that influence the population's size or its growth differently depending on the population density.

Density Independent

Factors affecting the size of populations regardless of the population density, such as weather and climate.

Unpredictable Ways

Patterns or outcomes that are not able to be foreseen or predicted due to a wide array of influencing factors.

Density Dependent

Refers to factors whose effects on the size or growth of a population vary with the population density, such as competition for resources.