Environmental Science
The earth's radiative equilibrium temperature is:

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

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Environmental Science
Which among the following is related to the word Mesoderm ?

Binomial system of classification
No membrane-bound organelles, no peptidoglycan in cell walls, introns
Anatomically advanced animals having all three germ layers
Forms blood and bone (leads to complex internal organs)

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