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.
4. __________ is a substance in food used by the body to promote normal growth, maintenance, and repair. A nutrient. 5. The term essential nutrient refers to the chemicals that can be interconverted in the liver so that the body can maintain life and good health.