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).
Nguni Cow Herd (Makatini ecotype). The Nguni cattle breed is special to southern Africa. A hybrid of different Indian and later European cattle breeds, they were introduced by Bantu-speaking to southern Africa during their migration from the north of the continent.The cattle breed is medium-sized and adapted to grazing on the Highveld.he ancestors of Nguni cattle were brought by the Xhosa, Zulu and Swazi people, during their migration to Southern Africa between 600 and 1400 AD.