3
QuizMultiple Choice

Systems of the Biosphere

Question 3 • 26-27 - C - RUSD Environmental Science S1

Which of the following statements about positive feedback mechanisms is not true?

Answer
A
Positive feedback mechanisms can result from human activity.
B
Positive feedback mechanisms can occur naturally.
C
Positive feedback mechanisms lead to increased change.
D
Positive feedback mechanisms reduce change in a system.

Explanation

Positive feedback amplifies an initial change, causing further change in the same direction. It can occur naturally or result from human activity, and it leads to increased—not reduced—change. Therefore, the statement that positive feedback mechanisms reduce change in a system is not true.

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