Question

What is the significance of Oasis?

Answer 1

Hypertonic solution
isotonic solution 
and 
hypotonic solution

Answer 2

Hope you will get your answer.....✌

The location of oases has been of critical importance for trade and transportation routes in desert areas; caravans must travel via oases so that supplies of water and food can be replenished. Thus, political or military control of an oasis has in many cases meant control of trade on a particular route......

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