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प्रश्न
The use of one of the following is eco-friendly. This one is :
(a) cars for transportation
(b) polybags for shopping
(c) windmills for generating power
(d) dyes for colouring clothes
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उत्तर
(c) windmills for generating power
Windmills use wind to generate electric energy. They do not create any kind of pollution. Thus, they are eco-friendly.
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