FLUIDS

Fluids include gasses and liquids. Properties of fluids, such as flow and pressure, are critically important in the context of your respiratory and circulatory systems. The most important biological fluid, which makes up roughly 60% of your body weight, is, of course, water.

This is physics, the natural phenomenon that underlies our chemistry and biology. Our next stop, Chemistry is the study of molecular interactions, which lays the groundwork for the biological reactions that take place in your body.