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 cattle are known for their fertility and resistance to diseases, being the favourite breed amongst the local Bantu-speaking people of Southern Africa (South Africa, Swaziland, Namibia, Zimbabwe, Botswana and Angola).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.