A supervolcano is a volcano capable of producing a volcanic eruption with an ejecta mass greater than 1015 kg (1012 t). Supervolcanoes occur when magma in the mantle rises into the crust but is unable to break through it and pressure builds in a large and growing magma pool until the crust is unable to contain the pressure. This can occur at hotspots (for example, Yellowstone Caldera) or at subduction zones (for example, Toba).
Homo habilis. An extinct hominid of the genus Homo that lived between 2.3 and 1.4 million years ago in Africa in the early Pleistocene period. H habilis was short, but had a less protruding face and a higher, rounder and larger brain cavity (Â±650 cc) than Australopithecus (Â±450 cc).
Modern humans are Homo sapiens, whereas Homo habilis was a species that lived between 2.2 and 1.6 million years ago.omo habilis was short and had disproportionately long arms compared to modern humans; however, it had a reduction in the protrusion in the face. It is thought to have descended from a species of australopithecine hominid. Its immediate ancestor may have been the more massive and ape-like Homo rudolfensis.