The Sink of an Element in the Ecosystem

question 67

Multiple Choice

The sink of an element in the ecosystem

• A) is the reservoir to which it returns during cycling.
• B) is the most accessible reservoir of that element.
• C) renders the element inaccessible.
• D) releases the element into the subsurface.
• E) is the source of the element for living organisms.

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Definitions:

Variable Interval

A variable interval refers to a schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, used in behaviorist studies.

Fixed Interval

A schedule of reinforcement where a response is rewarded after a set period of time has passed.

Fixed Ratio

A schedule of reinforcement wherein a response is rewarded only after a specified number of correct responses, leading to a high rate of responding.

Variable Ratio

A reinforcement schedule where a response is reinforced after an unpredictable number of responses, leading to high and steady response rates.