Essential nutrients refers to classes of nutrients found in food. Essential nutrients are simply those that are vital for the normal growth, maintenance and development of the body. There might be a slight confusion about essential nutrients that must be addressed.
Definition of waterproof for English Language Learners. : 1  designed to prevent water from entering or passing through. : 2  designed so that water alone will not remove it.
1. defends your body from any organisms that threaten the destruction of cells: immune system 2. white blood cells that produce antibodies: lymphocytes 3. system of vessels that are responsible for the removal of bacteria from the bloodstream: lymphatic system 4. outer layer of the skin which, along with other functions, makes the body waterproof: epidermis