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.
Fossil fuels are made of the fossilized remains of living things that died millions of years ago. Coal, oil, and gas are the most important fossil fuels. Today, they provide most of the worldâs energy.Plant remains decay to make brown, crumbly peat when they are buried and squashed.oal, oil, and gas are the most important fossil fuels. Today, they provide most of the worldâs energy. Plant remains decay to make brown, crumbly peat when they are buried and squashed.