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Australopithecus-The Transitional Human Forms
By about two million years ago, there were several well established hominid ancestors in Africa. One of the earliest of these is Australopithecus. Fossils of Australopithecus, which have been recovered from South and East Africa, show that their brains were relatively small, the bones enclosing the brain, therefore, were rather ape like, but the face was shorter than in apes. The enamel of the teeth indicated that Australopithecus ate essentially fruits. The evidence for two-footed posture in Australopithecus is strong as the back bone shows the typical hominid curvature. Also the hip bone, which is the skeletal frame to which the legs are attached is shorter than in apes, although it is not as short as in modem humans.
Explain the term - Ants Ants are the most widespread species of insects in soil and consume plant residues, but are more active in humifying insects than plants.
Explain Bile Salts - Constituents of Bile The liver is the site for synthesis of bile salts. The amino acid glycine is synthesized in the body. Taurine is derived from the sulp
Microbes: You should know that invisible microbes are present everywhere, because they can surviveeven under very inhospitable conditions. They are all around us, in the air
Scientific and Technical Achievements of Bronze Age: The major technical advance that accompanied the rise of cities was the discovery and use of metals, particularly coppe
Beth ydy cell fur yn wneud. diolch!
The Origin of Agriculture and Civilisation : There is no historical evidence to tell us exactly how agriculture arose. We can only imagine what may have happened. Cultivatio
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Cloning, science vs. religion
Satellite : Satellite transmission is one important symbol of revolution in communication technology. Besides transmitting picture and sound over long distances, it has revoluti
To show how water rises by capillarity Colour some water in a shallow dish with ink and touch a blotter to the water surface. Observe how the water increases in the blotter.
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