Final answer:
Water has a high specific heat capacity due to hydrogen bonding among water molecules. It helps regulate temperature and maintain homeostasis.
Step-by-step explanation:
Water has a high specific heat capacity because of its hydrogen bonding among water molecules. Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius. Water's specific heat capacity is about five times more than that of sand. This property allows water to regulate temperature and maintain homeostasis in organisms. Furthermore, water also has a high heat of vaporization, which requires a considerable amount of heat energy to change it from a liquid to a gas.