Clubs and amusement parks use special black light paint that glows different colors. You can also buy fluorescent black light bubbles, invisible black light ink, fluorescent black light carpet and even fluorescent black light hair gel. Ordinary highlighters work well as black light pens..
The definition of a nutrient is something that provides nourishment, food or substances necessary for growth. Protein is an example of a nutrient.
T he word nutrient is a derivation of theword nutrition, which implies food.The term essential nutrient, then, isredundant in the sense that essentiality isdeï¬ned as necessary to sustain life and foodsustains life.