Skin has three layers: The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.07-Aug-2019
Answer:pre-formed structures and chemicals, and by infection-induced responses of the immune system.
Explanation: brainliest?
