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.
Waterboarding is a form of torture that involves the use of water to coerce a prisoner or detainee into a confession. The victim is tied to an inclined board that positions the head lower than the feet. A piece of cloth is then secured over the victimâs face.ronically, actual drowning during waterboarding torture is rare due to the fact that the position of the lungs in relation to the head prevents enough water from filling the lungs. But waterboarding can cause serious injury.