The Primary Source of Energy for Producers in an Ecosystem

question 35

Multiple Choice

The primary source of energy for producers in an ecosystem is

• A)light energy.
• B)kinetic energy.
• C)thermal energy.
• D)chemical energy.

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Definitions:

Difference Threshold

The smallest amount that a given stimulus must be increased or decreased so that an individual can detect the difference.

Standard Stimulus

A specific stimulus used as a reference point in psychological experiments to measure reactions or perceptions.

Weber's Law

A principle describing the smallest difference in stimulus intensity that is detectable, typically proportional to the intensity of the original stimulus.

Difference Threshold

The smallest change in stimulation that can be detected 50% of the time by a participant.