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 were originally identified as three separate species: Bos taurus, the European or taurine cattle (including similar types from Africa and Asia); Bos indicus, the zebu; and the extinct Bos primigenius, the aurochs.The aurochs is ancestral to both zebu and taurine cattle.n older English sources such as the King James Version of the Bible, cattle refers to livestock, as opposed to deer which refers to wildlife. Wild cattle may refer to feral cattle or to undomesticated species of the genus Bos.