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.
A water conditioner is a general term for a piece of equipment that changes the water in your home in some way. A water conditioner might filter, remove chlorine or improve taste of the water. A water softener is a specific type of water conditioner that reduces water hardness one grain per gallon or less.