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.
brickeyee. Concrete is 'waterproof' to the extent that water does not damage concrete. It is NOT waterproof in the sense of not allowing water to pass through. Concrete (and any Portland cement product) is extremely effective at wicking water through even many feet of material.umidity, very high water table, type of concrete used, and lack of barrier when poured. Our basement is several inches thick and I think DH had a barrier put in, plus it has reinforced steel rods to keep it stable.