What is the most common molecule in living things? OA. CO,
O B. CO
OC. Hy
OD. Hz0
Helppp

Your answer is C: H2O

Living things composed of many molecules. Which are water , fats , carbohydrates , proteins. Gases include oxygen , carbon dioxide , carbon monoxide , hydrogen etc. Body also contains ions such as sodium , phosphate , potassium etc.

Water is body's main component. The amount of Water in human body is around 55- 60 percent. The percent of water in infants is high around 75-85 percent.

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