Water is a fluid at typical land and ocean temperatures. Water buffers the physical environment. Water buffers the internal environment. B. Water is polar. Water molecules are angled, with positive and negative regions.
Polarity makes it an excellent solvent for polar molecules and ions.
High cohesion C. Water is a reactant or product in many biochemical reactions. Lipids, carbohydrates, proteins, and nucleic acids. A. Lipids 1. Fats, waxes, oils. Many vertebrate hormones B. Carbohydrates 1.