“Bipolarity” in international politics describes distribution of power between two states which exercise majority of economic, military and cultural influence internationally. There was bipolarity during the Cold War as the world had only two big super powers- former Russia and the USA.

According to Fredrich Retzel, the German Geographer who is regarded as the Father of Modern Human Geography, human geography is a study of synthetical study of human societies and mutual relationship with surface of the earth.

When Prince Jung Jung Bahadur was born it was professed that he will die one day and that a tiger will be the reason of his death. So the tiger pose a threat to the king.

• William Douglas for a long period remained fearful of water. This handicap deprived him of the joy of canoeing, boating and swimming. He used every way he knew to overcome his fear of water, but it overpowered him. Finally, one October, he decided to get an instructor and learn to swim. He went to a pool and practised five days a wee, an hour each day. The instructor first put a belt around Douglas. A rope attached to the belt went through the pulley that ran on an overhead cable. The instructor held on the end of the rope, and they went back and forth. Then the instructor taught Douglas to put his face under water and exhale, and to raise his nose and inhale. Then he taught Douglas how to kick in water with his legs. This is how Douglas learnt swimming step by step.
• However to ensure that he has conquered his fear of water, Douglas went to Lake Wentworth in New Hampshire and dived off a dock at Triggs Island. He swam two miles across the lake to Stamp Act Island. He swam then crawl, breast stroke, side stroke, and back stroke. Only once the terror returned to some extent when he was in the middle of the lake.
• But he overcame it. Yet to clear his doubt, he went up the Tietan to Canrad Meadows, and camped in the high meadows by the side of Warm Lake. The next morning he dived into the lake and swam across to the other side of the Warm Lake. The next morning he dived into the lake and swam across the other shore and back. He shouted with joy as he had conquered his fear of water.

The total number of electrons in an atom of Cu is 29 
Given,
mass=10g

Molar mass= 63.5 
Therefore,
no. of moles of Cu = 10/63.5 = 0.157
So,
total numbers of electron =0.157*6.023*1023*29 =N(let).
So,

the toal charge due to N electrons is 
Qe = N*e { e is the fundamental charge =1.6*10-19} 
     = 0.157*6.023*1023*29*1.6*10-19 
     = 4.387*105 C

As the age structure of the population indicates, India is one of youngest countries in the world. We have seen from census of 2001 that age-group of 15-59 years is 59% of the total population while it is 34% in case of 0-4 years age group and 7% in 60 + years. It is a position that provides a demographic dividend because India has a vast work-force of youth. As India's one-third population was below 15 years i.e. in 0-14 year age group in 2000, it will attain 29 years age in 2020 while in case of China and USA it will 37, in Western Europe it will 45 and in Japan it will attain 48 years. Thus, India with remain more youth than these countries. This implies a large and growing labour force which can deliver unexpected benefits in terms of growth and prosperity.

No doubt, therefore, it is favourable position of age structure yet this work force can bring amazing prosperity to India only if they are provided with productive education and employment within the country. In absence of education, their productivity will remain lower and if they remain unemployed, then they are unable to earn at all and become dependent rather than earners.
Hence, we can stat that mere change in age structure can not guarantee any benefits unless it is properly utilised through planned development. In our country, dependency ratio is worked out by working out working age and non-working age population while it should be worked out by taking in account, the ratio of non-workers to workers. We see that dependency ratio in terms of workers and non-workers in India has fallen from 79 in 1970 to 64 in 2005 but age based dependency ratio is projected to fall to 48 in 2025 due to continued fall in the proportion of children in the total population and it will rise to 50 by 2050 because of an increase inthe proportion of the aged people viz. they will till then become old.
As data from to National Sample Survey Studies of 1999-2000 say and census of 2001 reveals, the growth of employment between 1987 and 1994 for rural and urban youth was recorded 2.4% while it was fallen to 0.3% between 1994 and 2004. Hence, it can not be hoped that this demographic dividend would be utilised and exploited in India for her prosperity and growth.

Malthus examined the relationship between population growth and resources in one of his works. He then proposed the Malthusian theory of population where he said that the population grows exponentially and the food supply grows arithmetically and that a balance between the two can be established through positive and preventive checks.

Factors responsible for the decline in *** ratio in India:
 (i)  *** specific abortion - foeticide.
(ii)  Female infanticide.
(iii) Preference for male child
(iv) Severe neglect of infants -girls.

Following are the features of economic policy in 1991
- Dependence on public sector There were 17 industries reserved for public sector as against 12 industries for private sector.
- Inward looking trade strategy Substituting foreign goods with the local goods so that more local goods could be sold.

- Controlled development of private sector License from Government was required in order to establish a new private firm

- Protection to small scale industries Priority to small-scale industries was given, a certain type of products were made by small scale industries so that they do not go out of the market.- Self sufficiency in food grains  Agricultural industry was commercialized and India became self-sufficient in making their own food products.- Diversification of industriesOther than jute, tea and cotton other goods were also made like electricity, automobiles etc.