Seems like it was just yesterday that he stepped up to the Wheel and let out his first âgood luck!â Since joining the daytime version of the show in 1981, he has earned three EmmyÂ® Awards, a Peopleâs Choice Award and a star on the Hollywood Walk of Fame.
Carbon dioxide is a pure substance. A pure substance can be an element or a compound. Carbon dioxide is a pure compound, consisting of two kinds of atoms that are bonded together. An element consists of merely one kind of atom. For example, oxygen is an element.
By that definition, carbon dioxide is not pollution. However, Webster's also has the definition: to contaminate (an environment) esp. with man-made waste.. Carbon dioxide is a waste gas produced by fossil fuel combustion, so can be classified as man-made waste. One can also make the case that carbon dioxide is contaminating the environment, since increased CO2 from burning fossil fuels has already harmed sea life.