Benign paroxysmal positional vertigo (BPPV) causes a whirling, spinning sensation even though you are not moving. If the vertigo is bad, it may also cause nausea or vomiting. The vertigo attacks happen when you move your head in a certain way, such as tilting it back or up or down, or by rolling over in bed. It usually lasts less than a minute. Moving your head to the same position again may trigger another episode of vertigo.
There are more carbon compounds than there are compounds of all other elements combined. The study of carbon compounds, both natural and synthetic, is called organic chemistry. Plastics, foods, textiles, and many other common substances contain carbon.
Carbon's bonding with other elements result in more than 10 million different compounds, including calcium carbonate. Coal, natural gas and shale oil are mostly hydrocarbons and make up the majority of the earth's fossil fuels.Carbon is found in carbon dioxide in the earth's atmosphere.