Include differences as well as similarities - fresh and salt water?Science

Similarities

The
greatest similarity between fresh and salt water is that both are basically the same
chemical - water, although the contents of other materials dissolved in it
differ.

Both contain some amount dissolved chemical in it
though the quantities vary.

Both form different links in
the water cycle of the nature.

Both are homes to aquatic
life.

Difference:

Salt
water contains much higher quantities of dissolved chemicals as compared to fresh water.
This  higher concentration of chemical also raises the density of salt water above that
of fresh water.

Plant and animals living in two types of
water bodies are different.

Salt water is found only as
large standing bodies of water. Most of these are in form of seas and oceans, although
though some lakes including very large ones considered to be sea also contain salt
water. Fresh water is found in standing bodies of water called lakes, as well as running
water as in rivers and streams. Fresh water is available in many other forms such as in
rain, and ice caps in the poles and in very cold places. However no fresh water is found
in seas and oceans.

Fresh water is used for drinking as
well as many industrial processes. However salt water is generally not suitable for most
of the industrial use except for cooling. On the other hand salt water is used as a
source of some chemicals, particularly common salt. Freshwater does not yield any such
chemicals.