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.
Herds resemble slow moving, multicolored forests of bare trees as their horns sway with every step. The AnkoleâWatusi breed is part of the Sanga family of African cattle breeds, which originated over 2,000 years ago from a combination of the Egyptian.
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