Some polymers (and some ceramics) used in biomedical applications are created with pores, which are empty gaps. These are examples of a beneficial 3D defect. Describe one possible benefit of having a porous polymer. BE SPECIFIC ABOUT THE BME APPLICATION! For example, polystyrene (Styrofoam) hot beverage cups have pores to reduce thermal conductivity, since air is a poor conductor. This keeps your drink hot but your hands cool. Polystyrene also doesn't degrade.