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

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Environmental Science
Infrared and visible satellite images might provide:

A way of identifying clouds suitable for cloud seeding.
A way of distinguishing between wet and dry clouds.
A way of determining cloud thickness and altitude.
A way of distinguishing between "new" and "old" clouds.

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