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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.
what are the effects of mining and farming on the phosphorus cycle?
COMMON DISEASE OF GOATS - 1 . ANTHRAX 2 . FOOT & MOUTH DISEASE 3 . CONTAGIOUS PNEUMONIA - Characterized by pneumonia & pleurisy, cough, snee
Q. Under which form is nitrogen fixed by living beings? The Most living beings can't use molecular nitrogen to obtain nitrogen atoms. The Producers fix nitrogen primarily from
Define Sample Titration for Fehling Soxhlet Method Dilute the given sample glucose solution in 100 ml volumetric flask to the mark with distilled water. Pipette 5 ml of Fehling
State four characteristics of an efficient respiratory surface. Four characteristics of an well-organized respiratory surface are: a) thin epithelium, b) large surface ar
Illustrate metabolic processes of vitamin B In the human and animal metabolism, they form a functional unit, since, as components of the various coenzymes, they are essential
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Define water losses by Intestine and Lungs? Intestine : A small quantity of water (about 100-200 ml) is normally lost in faeces, but this can exceed 5 L in diarrhoeal episodes
In which areas of the globe is gymnosperm abundance noteworthy? These plants are the typical vegetation of cold regions as the taiga, or boreal forest, of the northern hemisph
The ability to sequence DNA has led to a revolution in molecular biology. a) Describe the principles of DNA sequencing. b) A single sequencing reaction yields at best 1500 ba
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