Short Answer TypeElectricity is one of the greatest inventions of all times. It is mostly generated by using coal, natural gas and petroleum, which are exhaustible resources. Can you imagine the human society without electricity? This may happen in future, when all energy resources will be exhausted. Explain the values that can change this possible dark scenario.
Long Answer TypeWhat is sex ratio ? Explain the world pattern of sex ratio with suitable examples.
The ratio between the number of women and men in the population is called Sex Ratio.
World pattern of sex ratio :
(i)The world population reflects a sex ratio of 102 males per 100 females. The world pattern of sex ratio does not exhibit variations in the developed regions of the world.
(ii) The highest sex ratio in the world has been recorded in Latvia where there are 85 males per 100 females. In contrast, in Qatar there are 311 males per 100 females.
(iii) The sex ratio is favorable for females in 139 countries of the world and unfavorable for them in the remaining 72 countries listed by the United Nations.
(iv) In general, Asia has a low sex ratio. Countries like China, India, Saudi Arabia, Pakistan, Afghanistan have a lower sex ratio. On the other extreme is greater part of Europe (including Russia) where males are in minority.Define the term ‘commercial livestock rearing’. Explain its any four characteristics.
What is medical tourism ? Explain the scope of medical services for overseas patients in India.
Which is the longest trans-continental railway of North America ? Describe its any four features.
Define the term ‘growth of population’. Describe the third (III) phase of growth of population in India.
Explain the importance of foodgrains in the Indian agricultural economy. Describe any three characteristics of rice cultivation.
‘‘Indian railways brought people of diverse cultures together.’’ Support this statement with suitable examples.
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