Oil is the ancient biological remains of nature after a complex biological and chemical transfor mation. Nature also gave birth to thousands of years of collection.Oil has turned us into carbon dioxide fuels in modern life in convenient vehicles,I think that has caused the Earth's atmosphere and threatening injuries, it has also led to global warming. I think the easiest way to protect the Earth is Less air pollution affect climate, and take public transport vehicles using fossil fuels stuff There is good use of power and energy, caring for the earth is the easiest way of doing environmental protection.