Speciation is the method of formation of new species. A species can be defined as one or more populations of interbreeding organisms that are reproductively isolated in nature from all other organisms. As natural selection adapts populations occupying different environments, they will diverge into races, subspecies, and finally separate species. When populations no longer interbreed, […]
2 Main Types of Speciation | Evolution | Biology
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Absorption of Foodstuff in Human Body | Biological Processes | Biology
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Absorption is the process by which the end products of digestion pass through the intestinal epithelium and enter the blood stream. Attempts have been made to explain the mechanism of absorption on the basis of known physico-chemical principles. The following factors are believed to be involved in the process: i. Diffusion: This depends upon the […]
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