14. A disadvantage of wind-driven generators is that a. the fuel is expensive.

b. the wind does not always blow.

c. wind energy is inefficient.

d. it generators pollution.

 ( d ) it generators pollution.

Explanation: A disadvantage of wind-driven generators is that it generators pollution.

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answercharacteristics of place include things like economic activity, architecture,and culture,all of which are human elements that alter or can be influenced by the environment;