One disadvantage of using oil is that it is non-renewable, and another is when you burn it, it causes carbon dioxide to go into the air, which causes global warming.
oil
Oil
Oil has a reserve of chemical energy. If we burn it, that gets converted to heat energy.
The sun
Oil
Oil
Oil is a non replenishable source of energy. and, Oil is a "fossil fuel".
The Sun is the ultimate source of all energy on earth.
oil that is imported
tecnology and oil
Oil
Oil, for now....