Abstract Flat hydrodynamic shells likely represent an evolutionary trade-off between adaptation to an aquatic lifestyle and the instability of more rounded shells. thought beneficial for self-righting. Trade-offs often result in compromises. this is particularly true when freshwater turtles. https://www.lightemupsequences.com/quick-sale-2-5-Inch-By-10-Yard-Soft-Pink-And-Red-Damask-Dupioni-With-Red-Tinsel-Edge-Ribbon-super-value/