Types of Water Pollution. Toxic Substance -- A toxic substance is a chemical pollutant that is not a naturally occurring substance in aquatic ecosystems. The greatest contributors to toxic pollution are herbicides, pesticides and industrial compounds.he sources of water pollution are categorized as being a point source or a non-source point of pollution. Point sources of pollution occur when the polluting substance is emitted directly into the waterway. A pipe spewing toxic chemicals directly into a river is an example.
African Cattle. We supply two breeds of cattle from the Horn of Africa: Ethiopian Boran cattle (which have a pronounced hump) and the Somali cattle (which have a smaller hump).
Cattle breeds in communal area. Some of the breeds found in Zimbabwe communal areas include the Brahman, Afrikander, Nguni, Tuli, Hereford, Simmental, Mashona and non descript crossbreds (Mashoko et al 2002). The Nkone, Tuli and Mashona are regarded as indigenous to Zimbabwe (Mpofu 2002).