Environmental Science
The primary source of energy for the earth's atmosphere is:

Energy from within the earth
The sun
Lightning discharges associated with thunderstorms
Latent heat released during the formation of hurricanes
Erupting volcanoes

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Environmental Science
What is meant by ex-situ conservation?

Conservation of a species by protecting its habitat along with all other species living there
Conservation of a species outside its natural habitat
Conservation of plants
Conservation of forest eco system

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