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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photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.