Water warms up more slowly than the vast majority of other things. It is able to hold a significant amount of heat. Because of this ability, the temperature of the Earth is able to stay relatively stable, since water is able to store the heat from the sun during the day and gradually let it out during the night.
In addition to having a high specific heat capacity, water also has a number of additional qualities that set it apart from other substances. When heated, the hydrogen bonds that make up water have a tendency to keep it together, which results in water having a high boiling point. These hydrogen bonds also give water a strong surface tension, which enables it to adhere to other objects and enables capillary action, which is an important feature in plants that allows water to be drawn upward from the roots to the leaves. Capillary action is an important feature in plants that allows water to be drawn upward from the roots to the leaves.