Answer:Skin Layer Main FunctionEpidermis - Provides a barrier against external factors like water loss, temperature, and pathogens; sheds dead skin cellsDermis - Supports the epidermis, contains blood vessels, nerve endings, hair follicles, and sweat glands; regulates body temperature and aids in sensationHypodermis - Acts as insulation and shock absorber, attaches skin to underlying muscles and bones, stores fat for energyThese layers work together to protect the body and maintain overall health.