Environmental Science
The earth's radiative equilibrium temperature is:

The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates
The average temperature the earth must maintain to prevent the oceans from freezing solid
The temperature at which rates of evaporation and condensation on the earth are in balance
The temperature at which the earth is radiating energy at maximum intensity

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Environmental Science
What is meant by ex-situ conservation?

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

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