Question

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

Answer 1

d.

Positive feedback amplifies change in a system (e.g., ice–albedo feedback), whereas negative feedback reduces or counteracts change (e.g., a thermostat).