Why are blood and most other biological fluids classified as aqueous solutions?

Explanation:

Because in definition, an aqueous solution is dissolving substances in a solvent( most cases the solvent is water).

Most if not all biological fluids are a mixture of water and other substances, hence they are refered to a aqueous solutions.

Blood plasma for example is made up of salts(solutes), water (solvent) and a number of proteins (solutes).

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