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Fuel Requirements - Deforestation
The increasing demand for fuel wood is one of the major factors leading to the degradation of the forest ecosystem. Fuel wood is of such major importance as a forest produce that about one-half of all the wood cut in the world is used for lighting, cooking or heating purposes. Even today more than one third of humanity still relies on wood for fuel. In the recent years, the oil crisis and the sharp increase in the prices of oil have further escalated the demand for wood as fuel.
The fuel wood consumption has gone up from 86.3 million tonnes in 1953 to about 135 million tonnes in 1980, and it is believed that by the year 2000 A.D., the demand for firewood would be in the range of 300 to 330 million tonnes. The increasing demand for firewood with every passing year means greater pressures on the forests, which also means increased intensity of deforestation.
Unlike the phagocytosis, that is a regulated form of endocytosis carried out by a small number of cell category, pinocytosis is a constitutive process which happens continuously in
The movement of the chromosome is called anaphase A, and the extension of the poles is termed anaphase B.The mechanism of these movements are discussed below. Chromosome move
In developing countries because of poor compliance, poverty, ignorance, primary and secondary prevention strategies are difficult to implement properly. Also in western countries (
Q. What is the function of keratin in the epidermis? The epidermis is the outer layer of the skin made of epithelial tissue in the epidermis there are keratin-secreting cells (
Teratology: It is the study of abnormal embryos. In other words teratology is the study of abnormalities of physiological development. It is often use as the study of birth defect
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What is the importance of mitosis for the embryonic development? Every embryo grows from a single cell that suffers mitosis and operates other cells that also divide themselves
GENE INTERACTIONS (POST MENDELIAN GENETICS) Phenotypic expression of a gene may be altered by the influence of other genes. The modification of the normal phenotype of certain
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