Discussion
The main source of energy for wind power generation is
Answer: B
The main source of wind energy is the Sun's uneven heating of the Earth.
The Sun heats land and sea, and the equator and the poles, by different amounts. Warm air rises and cooler air flows in to take its place, creating differences in pressure that move air as wind. Wind power is therefore an indirect form of solar energy.
The Earth's rotation deflects winds (the Coriolis effect) but does not supply their energy. Ocean currents are themselves driven largely by winds, and gravitational force is the energy behind tidal power, not wind.
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