Environmental Science
Many freshwater animals cannot live for long in sea water and vice versa mainly because of the

Change in the levels of thermal tolerance
Osmotic problems
Variations in light intensity
Change in N levels
Spectral quality of solar radiation

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Environmental Science
The wind direction is:

Always directly from low toward high pressure
Always directly from high toward low pressure
The direction to which the wind is blowing
The direction from which the wind is blowing

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