Environmental Science
Chipko movement is a public agitation that occurred in

Mansbal area in Kashmir
Silent valley in Kerala
Tehri Garhwal area of Uttar Pradesh
Sundarban area in Bengal

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Environmental Science
The wind-chill factor:

Relates body heat loss with wind to an equivalent temperature with no wind
Determines how low the air temperature will be on any given day
Tells farmers when to protect crops from a freeze
Takes into account humidity and air temperature in expressing the current air temperature
Indicates the temperature at which water freezes on exposed skin

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