Environmental Science
The north-facing side of a hill in a mountainous region in the US tends to:

Grow a variety of trees that are typically observed at higher elevation
Receive less sunlight during a year than the south-facing side
All of these
Be a better location for a ski run than the south-facing side
Have snow on the ground for a longer period of time in winter compared to the south-facing side

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Environmental Science
During the winter solstice in the Northern Hemisphere:

The noon sun is overhead at 23.5o S latitude
At middle latitudes in the Northern Hemisphere, this marks the longest night of the year
All of these
Astronomical winter begins in the Northern Hemisphere

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Environmental Science
MoEF means

Management of Environment and Forestry
Ministry of Environment and Forests
Ministry of Fuel and Energy
Ministry of Forest and Energy

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