Question

which characteristic of water contributes to its special, life - sustaining properties? unequal sharing of electrons that creates polarity low boiling point that contributes to high heat capacity presence of oxygen that causes oxygen bonds between molecules ionic bonds that create polarity

Explanation:

Water has special life - sustaining properties due to hydrogen bonds between its molecules. Unequal sharing of electrons in water molecules creates polarity. High heat capacity of water helps in regulating temperature in living organisms. The presence of oxygen in water molecules and hydrogen bonds contribute to its unique properties. Water has a relatively high boiling point due to hydrogen bonding, not a low one. Water has covalent bonds, not ionic bonds.

Answer:

The first option "Unequal sharing of electrons that creates polarity" and the third option "Presence of oxygen that causes bonds between molecules" contribute to water's special, life - sustaining properties.