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Posted by Riya Mahapatra 6 years, 6 months ago
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Sia ? 6 years, 6 months ago
A 1 molar solution is a solution in which 1 mole of a compound is dissolved in a total volume of 1 litre.
Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent.
1 molar aqueous solution is more concentrated than 1 molal aqueous solution .
1 molar solution contain 1 mole of solute in 1 litre of the solution which include both solute and solvent.
Posted by Megha Singha 6 years, 6 months ago
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Sia ? 6 years, 6 months ago
Check Syllabus here : <a href="https://mycbseguide.com/cbse-syllabus.html">https://mycbseguide.com/cbse-syllabus.html</a>
Posted by Deepjyoti Borthakur 6 years, 6 months ago
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Yogita Ingle 6 years, 6 months ago
Cellular Level: In case of cellular level organization, a single cell is responsible for all the metabolic activities. Cellular level organization is present in unicellular animals and some of the muclticellular animals.
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Yogita Ingle 6 years, 6 months ago
- With time the trend of physical education in India is changing. It has gained lots of importance with time and has evolved in itself to new dimensions and platforms.
- Along with this the new generation has found new and keen interest in the field of physical education. This is though not a new field and was never untouched by exploration.
- With the growing civilization and globalization, the physical education has spread its branches to new direction.
- For some it is a mode of entertainment, physical training, body training, body culture, an aspect of healthy living, a significant part of education itself and an evolved dimension of general and much required physical education.
- These have now developed as even an important competitive sports activity.
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Yogita Ingle 6 years, 6 months ago
Early humans would have obtained food through a number of ways, such as gathering, hunting, scavenging and fishing. Gathering would involve collecting plant foods such as seeds, nuts, berries, fruits and tubers.
(i) That gathering was practised is generally assumed rather than conclusively established, as there is very little direct evidence for it. While we get a fair amount of fossil bones, fossilised plant remains are relatively rare.
The only other way of getting information about plant intake would be if plant remains were accidentally burnt. This process results in carbonisation. In this form, organic matter is preserved for a long span of time. However, so far archaeologists have not found much evidence of carbonised seeds for this very early period.
(ii) In recent years, the term hunting has been under discussion by scholars. Increasingly, it is being suggested that the early hominids scavenged or foraged* for meat and marrow from the carcasses of animals that had died naturally or had been killed by other predators.
It is equally possible that small mammals such as rodents, birds (and their eggs), reptiles and even insects (such as termites) were eaten by early hominids.
(iii) Hunting probable began later - about 500,000 years ago. The earliest clear evidence for the deliberate, planned hunting and butchery of large mammals comes from two sites : Boxgrove in southern England (500,000 years ago) and Schoningen in Germany (400,000 years ago)
(iv) Fishing was also important, as is evident from the discovery of fish bones at several places.
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