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.
Cows In Africa. OK, an usual topic for a blog, but cows/cattle is very important to the livelihood of many African tribes. You may have heard of the Masaai and their cattle? In such communities cattle are assets, food as well as a source of income which enables them to send child to school and pay for health care.