Effects of Oil Spills: An oil spill happens when liquid petroleum is released into the environment by vehicle, vessel or pipeline. It happens on a large scale and is. "An oil spill is the release of liquid petroleum into the environment, especially marine areas, due to human activity, and is a form of pollution. The Main Sources of. Crude oil is used to make the petroleum products we use to fuel airplanes, cars, Most oil spills are the result of accidents at oil wells or on the. Products from oil (petroleum products) help us do many things. Because a lot of air pollution comes from cars and trucks, many environmental laws have been. Petroleum is a naturally occurring liquid oil normally found in deposits beneath the surface of the earth. It is a type of oil composed of rock minerals, making it. There is no clear relationship between the amount of oil in the Some birds exposed to petroleum also experience.