Ka'ba definition. The cube, a gray rock structure at Mecca; re-shrouded yearly in black colored brocade. It marks the geographical center for the Islamic globe and it is the focal point of prayer, orientation, and pilgrimage.
Upper incisor teeth develop into tusks in African elephants and grow throughout their lifetime. There are two subspecies of African elephantsâthe Savanna (or bush) elephant and the Forest elephant. Savanna elephants are larger than forest elephants, and their tusks curve outwards. In addition to being smaller, forest elephants are darker and their tusks are straighter and point downward. There are also differences in the size and shape of the skull and skeleton between the two subspecies.
The African elephant is actually two different species, according to a new DNA study that may settle a long-simmering debate. The big surprise of this paper, though, is just how genetically different the African savanna elephant and the African forest elephant are, co-author David Reich said.