Describe 5 characteristics of mammals and explain how they allow mammals to survive in different environments?

Mammals are characterized by the presence of mammary glands for nursing their young, hair or fur that provides insulation, a three-boned middle ear for enhanced hearing, warm-blooded (endothermic) regulation for maintaining body temperature, and a complex brain that supports advanced behaviors. The ability to nurse allows for prolonged care of offspring, promoting survival in varying habitats. Fur or hair aids in thermoregulation, enabling mammals to inhabit diverse climates, while advanced hearing and cognitive abilities help them adapt to complex environments and find food or avoid predators. Additionally, being warm-blooded allows mammals to thrive in extreme temperatures by maintaining a stable internal environment.