Skin is used for protecting the body from harmful substances, and skin is comprised of two layers, the epidermis and dermis. Given these facts, what protects the body from harmful substances among the following options:
- h2o
 - brain
 - hard outer covering
 - fur and fat
 - protective bony armor
 - salt and pepper
 - epidermis and dermis
 - deoxyribonucleic acid


 

       epidermis and dermis  