What is the difference in the concentration of solutes between salt water and fresh water?

Well, salt water contains various amounts of salts, meanwhile fresh water does not. However, that does not mean that animals and creatures thrive in one kind, but not the other, instead, both waters are capable of holding certain fish, microbes, and even plants. Hope this helps, please mark as brainliest if possible, thank you! :)

The higher you go up the less oxygen there is