Environmental Science
What is meant by ex-situ conservation?

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

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Environmental Science
An important reason for the large daily temperature range over deserts is:

Dry air is a very poor heat conductor
The ozone content of desert air is very low
There is little water vapor in the air to absorb and re-radiate infrared radiation
The light-colored sand radiates heat very rapidly at night
Free convection cells are unable to form above the hot desert ground

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