Swallowing air and belching are natural occurrences that result from eating or drinking too quickly. Chewing gum or drinking carbonated beverages can also introduce air into the stomach and cause belching. Because infants frequently swallow air when feeding, burping or belching is normal after they have been fed. The act of burping an infant helps relieve the discomfort caused by swallowed air.
Sleeping sickness, also known as Human African Trypanosomiasis (HAT), is caused by Trypanosoma brucei rhodensiense in Eastern Africa and Trypanosoma brucei gambiense in Western Africa . Both protozoan species are morphologically indistinguishable, but have drastically different epidemiological features.
The black mamba (Dendroaspis polylepis) is a venomous snake endemic to sub-Saharan Africa.It takes its common name not from the colour of its scales, but from the interior of its mouth, which is inky-black.It is the longest species of venomous snake on the African continent, with a length typically ranging from 2 meters (6.6 ft) to 3 meters (9.8 ft) and up to 4.3 to 4.5 meters (14.1 to 14.8 ft).he black mamba (Dendroaspis polylepis) is a venomous snake endemic to sub-Saharan Africa.