👉 Fluids, encompassing water, blood, and other bodily liquids, exhibit a range of observable characteristics that reflect their essential role in sustaining life. They are generally transparent or translucent, allowing light to pass through and enabling us to see internal structures. Fluids have a high specific heat capacity, meaning they can absorb and retain large amounts of heat without significant temperature changes, which helps regulate body temperature. They also exhibit surface tension, allowing small organisms like insects to walk on water and enabling the formation of droplets. Additionally, fluids are compressible to varying degrees; for instance, blood is less compressible than water, which impacts circulation dynamics. These properties collectively make fluids indispensable for physiological processes and overall bodily function.