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Classification:
There were many similarities between things or phenomena which led to their classification. The first classifications were in terms of beings (the living), things (articles and substances, or non-living) and passions or actions. Here arose a kind of descriptive reasoning; if one of a class behaved in a particular way, it was likely that the other in the same class also behaved in the same way. Thus, the accumulation of knowledge and sifting of experiences had major impact on primitive biology and chemistry. Match the three general elements or features of science listed in column I with their associated techniques or practices in column 2 of the table given below. We have done one part of the exercise 'as an example.
So far, we have seen that the primitive society had developed a host of techniques for their material comfort. Archaeological records show that towards the end of the Stone Age, primitive human beings were using many facilities such as huts. sewn garments, bags and buckets. They had also evolved technical devices like canoes. hooks and harpoons, spears, slings, throwing sticks, boomerang etc(Fig.). Many of these are actively being used among some present-day tribes such as the Eskimos, African Bushmen, Australian aborigines and some Indian tribes.
Alginate Alginates are produced by brown seaweeds (Phaeophyceae, mainly Laminaria). Alginates or algin, is a generic term for the salts and derivatives of alginic acid. Algin
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Define the advatages of Potassium The gross impact of these effects on crop production is manifested in several ways. Perhaps the first visible indication of a potassium defic
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Heat removal of Gutta percha: - Heated plugger. - Touch-N-Heat or system B used to thermo soften and remove gutta-percha from root canal systems. - The cross-sectional
Define the types of Ketogenic Diets? The ketogenic diet is initiated after an initial period of Pasting for 24-72 hours, till ketosis is established. There are two types of ket
Chiropterophily - Cross-pollination Pollination brought about by bats is called cheiropterophily. Bats which feed at night and do not see very well, are frequent pollinators i
What is the phenomenon of the apical dominance in plants? How it can be artificially eliminated? The Apical dominance is the phenomenon by which high (over the positive range l
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