How are shells useful for tortoise?

Tortoise shells serve as vital protective structures, acting as a shield against predators and environmental hazards. The hard, bony exterior provides physical defense, while the shell's design allows tortoises to retract their limbs and heads for added safety. Additionally, the shell plays a role in regulating body temperature and offers camouflage in their natural habitats. Overall, the shell is essential for the tortoise's survival and well-being.