Africa is home to two species of rhinoceros – the hook-lipped or black rhinoceros and square-lipped or white rhinoceros. The white rhino is the largest existing species of rhinoceros and the second largest animal after the elephant. An adult male rhino can weigh as much as 3.6 tonnes. Female rhinos are comparatively less heavier, but can still weigh up to 1.7 tonnes….
The inability to identify familiar people by their faces is called prosopagnosia. The term ‘prosopagnosia’ is derived from two Greek words prosopon meaning ‘face’ and agnosia meaning ‘not knowing’. This condition occurs when the brain is unable to assign a set of facial features to an identity. The person might, however, be able to identify objects….
The archaeopteryx is considered to be the earliest bird and it is the link between birds and reptiles. The archaeopteryx had a set of teeth, which are not found in birds. However it had wings, feathers and reduced fingers, all found in modern birds.
