Open Systems [edit]. A system that interfaces and interacts with its environment, by receiving inputs from and delivering outputs to the outside, is called an open system.
Colgate (toothpaste) From Wikipedia, the free encyclopedia. Colgate (sub-brand of Colgate-Palmolive) is an oral hygiene product line of toothpastes, toothbrushes, mouthwashes and dental floss. Colgate toothpaste was first sold by the company in 1873, sixteen years after the death of the founder, William Colgate. 1 History.
1 Avoid drinks that stain your teeth, such as coffee and tea. Learn more about foods that can actually help brighten your smile in the Colgate Oral Care resources. 2  Brush with a whitening toothpaste. Colgate Optic White toothpaste can help keep your teeth white.  Schedule a follow-up treatment every six months.