Contamination of soils to remove, to ensure that the best products for human consumption is grown, (the majority of organic farmers) first of all must be proof that the land of good quality, there are some things that the ground the basic organic material in the region that the soil is made, such as granite or limestone, then there are organisms that decompose like leaves, critter droppings, etc., the situation of the land and the height of the bottom of the valley or on a mountain slope, climate is also an important factor. What happens when the plants grow in contaminated soil? What happens when the plants are eaten? It depends on what type of soil, the type of toxins present, and the severity of the contamination of soil, how much or what in the plant, basically sandy soil is less likely to hold chemicals, whereas soil containing more organic substances such as peat moss is easier to impurities This has the effect of a change in metabolic state of microorganisms consists of soil, so that the pollutants in the food chain. Contamination of soils may also be the effect that they touch, as a function of impurity, when small animals borrow or people dig in, and then, if the soil is dry the contaminated dust particles may be inhaled, occasionally some are contaminants in dust form, absorbed in the skin. What are the causes of soil contamination? Now, there are oil spills, pipeline leaks, toxic spills country has been for things like factories, mines, gas stations and airports, all of these contaminated soil under them, the amount of unnatural things in the land fill leaching into the ground, in some countries still plants sprayed with highly toxic pesticides, over use of fertilizers, all of these things have come to the contamination of soils around the world. When there are natural disasters such as hurricanes, earthquakes and tsunamis facilities keep that toxic substances, oil and other chemicals are damaged or destroyed, the leaks and spills cause the contamination of soil, about 10 mi. ² land southeast of New Orleans was contaminated when more than 1 million gallons of oil soaked into the ground after a hurricane, destroyed some holding facilities. What are the concerns and health problems? China has little legislation for the protection of land, particularly the contamination of soils, but unfortunately it seems that more than 10 of the country, the contamination of soils, land is irrigated by polluted water, the effects of soil contamination are devastating on people's health causing kidney and liver problems and even leukemia. These are thousands of pages of land pollution in North America and even more in other countries, some have not yet been identified, while the United Kingdom has many legislative measures to prevent health of soil contamination, there are rules which for land use, parks and playgrounds, housing projects to allotment, as the effects of the contamination of soils. The oil sands project is a major concern especially environmentalists, many thousands of hectares of land will be deforested, water is contaminated, many new developments are explored measures to try to create in an attempt to ensure the environmental concerns are minimized however the threat continues. Not long ago, more than 500 ducks were killed when they landed on one of the toxic ponds. Since the 1970s there has been seepage from toxic tar island dyke in the world, and recently a leek of toxic contamination was discovered, in the Athabasca River, a main water supply for Alberta, BP also wants a piece of cake we have recently purchased for the oil sands projects. Greenpeace calls on the oil sands, the biggest environmental crime, bitumen has a higher carbon content than crude oil therefor its harmful emissions while refined, processed and burned more, would not it be great if the money and resources were to use and implementation of fuel, the alternatives? These are all factors, to the world of contamination of soils.