The cell membrane and the associated transport proteins found in the membrane are responsible for regulating the movement of hundreds, if not thousands, of different types of molecules into and out of the cell.
Among the gases emitted when fossil fuels are burned, one of the most significant is carbon dioxide, a gas that traps heat in the earth's atmosphere. Over the last 150 years, burning fossil fuels has resulted in more than a 25 percent increase in the amount of carbon dioxide in our atmosphere.
The most common fossil fuels are coal, oil, and natural gas. Peat, a very young form of coal, and oil shale are types of fossil fuel.hese fuels were formed millions of years ago from plants and animals that died and decomposed beneath tons of soil and rock. These fossil fuels are not fossils like the bones of prehistoric creatures.