Barrons AP Environmental Science

(Marvins-Underground-K-12) #1

  1. (D) Feedback loops can enhance or buffer changes that occur in a system.
    Positive feedback loops enhance or amplify changes and tend to move a
    system away from its equilibrium state and make it more unstable (i.e., a
    change [increase or decrease] in some variable results in the same type of
    change [increase or decrease] in a second variable). Negative feedback loops
    tend to dampen or buffer changes, which tends to hold a system to some
    equilibrium state, making it more stable.

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