An Ecologist Samples the Abundance of Various Species Along an Environmental

question 70

Multiple Choice

An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species.Instead,peaks of abundance of dominant species are merely randomly spaced segments along a continuum.This distribution of species supports the

• A)unified concept of a community.
• B)organismic concept of a community.
• C)individualistic or continuum concept of a community.
• D)successional concept of a community.

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Definitions:

Reinforcement Theory

A psychological perspective focusing on how outcomes of behaviors affect the likelihood of those behaviors being repeated.

Focal Objects

Core items or subjects in a study or a field of interest that attract primary attention or analysis.

Physical Things

Objects or substances that have a tangible presence and can be perceived through the senses.

Attribution Theory

A psychological theory that attempts to explain how individuals determine the causes of others' behavior, attributing it to internal dispositions or to external situations.