One of the primary causes of oil spilling into marine environments in an oil spill is people who are careless or make mistakes, according to the Office of Response and Restoration. Such incidents involve barrages, tankers, refineries, pipelines and storage facilities. Other causes include equipment breakdowns, natural disasters and deliberate acts, such as terrorism, war, vandalism or illegal dumping.Know More
The Exxon Valdez Oil Spill Trustee Council lists several reasons that this tanker ran aground in March 1989. They are all acts of carelessness or human mistakes. While tests showed the captain of the Valdez to have alcohol in his system several hours after the accident, the state of Alaska found him not guilty of operating the vessel under the influence of alcohol.
As oil floats on the ocean, it spreads rapidly across the surface to form an oil slick. Eventually, it spreads to form a very thin layer, known as a sheen, with a rainbow-like appearance. Oil spills are harmful to fish, shellfish, birds and marine animals. The oil affects the ability of fur and feathers to repel water and insulate the animals from the elements. Oil is also toxic to animals that ingest it in attempts to clean themselves.
While the Exxon Valdez spill is no longer among the largest 50 oil spills, it affected 1,300 miles of shoreline. Marine biologists estimate it to have killed 250,000 seabirds, 2,800 sea otters and 22 killer whales, according to the Exxon Valdez Oil Spill Trustee Council.Learn More
KidzWorld explains that oil spills occur when people cause an oil tanker, a ship that carries oil from one place to another, to leak oil into the sea. Carelessness in maneuvering oil tankers typically causes an oil spill. Illegal dumpers also dump crude oil into the ocean to avoid spending money on decomposing their waste oil.Full Answer >
A combination of atmospheric chemicals, typically pollutants, interacting with sunlight causes smog. Smog, most common in sunny cities, forms ground-level ozone, which can cause respiratory problems.Full Answer >
The causes of pollution are excessive use of natural resources, over industrialization, increase in global population and globalization. The use of chemicals, such as pesticides and weedicides, cause soil pollution.Full Answer >
Pollution has many causes, including excessive fuel burning, industrial wastes, pesticides, oil spills and unwanted chemicals being absorbed into the soil. The primary kinds of pollution are air, water and soil pollution, but certain areas can suffer from radioactive pollution, heat pollution, noise pollution and light pollution.Full Answer >