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).
Bovidae - antelopes, cattle, gazelles, goats, sheep There are 140 species of wild and domesticated animals in this family. They are found in Africa, Asia, North America, and Europe. The majority of the species in this family are found in Africa. African species include: the impala, the silver dik-dik, the black wildebeest, the springbok, and the rhebok. Animals in this family have horns. They vary in height from 9 inches 6.5 feet!