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Supply subscript. Expand a little. Provide fodder for discussion of (your choice!) the anthropic principle or divine Providence or both
Water is and oderless, tasteless, colorless substance. Its chemical formula is H2O. (That is two hydrogens and one oxygen. I apologize for the lack of subscipts.)
Water is an odorless, tasteless, colorless substance. Its chemical formula is H<sub>2</sub>O, two hydrogens and one oxygen atom.
The shape of the water molecule is a shallow V, and the interactions between the atoms result in the oxygen atom having a strong negative charge and the hydrogen atoms have a strong positive charge. Thus the water molecule is a strong electrical [[dipole]], which accounts for some of its properties. Although we are accustomed to think of the word "solvent" in connection with organic solvents like gasoline or benzene, water is an extremely powerful solvent, a fact that is sometimes overlooked because water is so familiar.
Water is essential to life as we know it, and all living organisms are comprised mostly of water.
Water, compared to other compounds, has a number of unusual properties, such as expanding rather than contracting when it freezes. As noted by Lawrence Henderson in his 1913 book, ''The Fitness of the Environment,'' its ability to support life is directly related to some of these unusual properties.