Life expectancy at birth, female (years) ( 1 ) United Nations Population Division. World Population Prospects, ( 2 ) Census reports and other statistical publications from national statistical offices, ( 3 ) Eurostat: Demographic Statistics, ( 4 ) United Nations Statistical Division.
Effect on human health: The land when contaminated with toxic chemicals and pesticides lead to problem of skin cancer and human respiratory system. The toxic chemicals can reach our body through foods and vegetables that we eat as they are grown in polluted soil.
Soil pH Management Soil pH is affected by land use and management. Vegetation type impacts soil pH. For example, areas of land foresttend to be more acidic than areas of Conversion of land from grassland. forestland or grassland to cropland can result in drastic pH changes after a few years. These changes are caused by loss of organic matter,a removal of soil minerals when crops are harvested, erosion of the surface layer, and effects of nitrogen and sulfur fertilizers. Addition of nitrogen and sulfur fertilizers can lower soil pH over time.