Soil, or land pollution is soil contamination that prevents the natural growth and balance of the land. Pollution can be present in land used for cultivation, habitation, or as a wildlife preserve. Some soil pollution is deliberate, such as the creation of landfills. However much of soil/land pollution is accidental and can have widespread effects. Soil pollution sources include: Hazardous waste and sewage spills, Non-sustainable farming practices, such as the heavy use of inorganic pesticides, Strip mining, deforestation, and other destructive practices,Household dumping and littering.