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).
From Wikipedia, the free encyclopedia. The West African giraffe, Niger giraffe or Nigerian giraffe (Giraffa camelopardalis peralta) is a subspecies of giraffe distinguished by its light colored spots, which is found in the Sahel regions of West Africa.ts last self-sustaining herd is in southwest Niger, supported by a series of refuges in Dosso Region, and the tourist center at Koure, kourÃ© some 80 km southeast Of. Niamey all captive Supposed West african giraffe are now known to Be african Grafici kordofan (Giraffe. g. c). antiquorum