Creatinine is a toxin produced during the metabolism of meat in our body. Therefore, people with lots of muscles or who eat lots of meat always have a relatively high creatinine level, but it usually fluctuates in the normal range: 0.5-1.3mg/dL.
comet definition An object that enters the inner solar system, typically in a very elongated orbit around the sun. Material is boiled off from the comet by the heat of the sun, so that a characteristic tail is formed.
Facts about comets. 1  Sometimes comets are referred to as âdirty snowballsâ or âcosmic snowballsâ. 2  Comets orbit the Sun in elliptical paths â just like the planets. 3  A comet has four components: a nucleus, a coma, a dust tail and an ion tail. 4  The nucleus of a comet contains the vast majority of its total mass. Comets have a halo when they move close to the Sun. What happens is the solar radiation vaporizes the ice and gas gas in the comet into a halo around it.