1. Wind Farms

Many people believe that wind should replace oil and coal as a source of energy for producing electricity. The structures in the picture are wind turbines with blades that are rotated by the wind. These rotations cause electricity to be produced by generators that are turned by the turbines.

The graphs below show the average wind speeds in four different places throughout a year. Which one of the graphs indicates the best place to establish a wind farm for generating electricity?

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