Water has unique properties including polarity, hydrogen bonding, and high specific heat capacity that arise from its molecular structure and allow it to perform important functions. Adhesion and cohesion are the attraction of water molecules to other surfaces and themselves, respectively, while polarity results from water's bent molecular shape with partially positive and negative ends. Hydrogen bonding between water molecules contributes to cohesion and many other properties crucial for life, such as capillary action and heat regulation in the human body.