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In the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint. Although still fragmentary, the available fossil evidence makes it possible to construct a more or less coherent story of human origin and its development. Besides suggesting a primate ancestory, fossil evidence has indicated various trends in human evolution. Today the modern man is regarded as a climax of the evolutionary process. But several questions are raised as to which direction the human evolution is proceeding now and what direction will it take in the future. Is the be-all and end-all of all the evolutionary process? Or do human beings continue to evolve biologically? It may not be possible to provide a direct answer to these questions since evolution is a long term process and the effects could be visualised only after tens of thousands of years.
CARDIO PULMONARY RESUSCITATION: Cessation of cardiac activity is determined by inability to palpate a central pulse, unresponsiveness and Gnea. CPR consists of measures for
The gaseous pollutants can be controlled through the techniques of combustion, absorption adsorption and cold trapping. (a) Combustion: Though combustion is a major cause of i
FUNCTIO N OF LIPIDS Fats are storage products of both plants and animals. I n plants , fats are commonly stored in spores and seeds while in animals they are sto
Give an example of how a functional group can affect the elements of an organic compound. The hydroxyl group on alcohols is polar and this produces alcohols polar compounds.
Can stroke be prevented Brain experts are convinced that several strokes can be prevented with proper attention to lifestyle factors which increase risk, including smoking, exc
Explain Coelomates? Recall that Acoelomates have solid bodies, and Pseudocoelomates have body cavities that form between the endoderm and the mesoderm. In contrast, the body ca
How do keep respiratory system healthy? The circulatory system supplies food and oxygen to the body's cell. It carries away waste production of energy. The wastes must then be
Why is the development of bipedalism considered to be a major advancement in human evolution?
Delimitation and Limitation: There may be many aspects of the problem that need to be explored, but it is difficult to cover all aspects in a single research study bec
Anther is the top of a stamen's filament; divided into pollen sacs in which the pollen grains are form.
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