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What proportion of the country is overusing its groundwater reserves?
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“Consequences of environmental degradation do not respect national or state boundaries.” Which of the following is the essence of this statement?
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Identify the soil with the help of clues given below:
- develops in areas with high temperature and heavy rainfall
- is low in humus content
- found in the hilly areas of Karnataka, Kerala and Tamil Nadu
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Two statements are given in the question below as Assertion (A) and Reasoning (R). Read the statements and choose the appropriate option.
Assertion (A): Crude oil reserves in the entire world are depleting, we need to find a sustainable substitute for it.
Reason (R): Oil and petrol prices are increasing day by day.
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Why was the slogans demanding “Swatantra Bharat” important?
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Who formed the ‘Swaraj Party’ within the Congress?
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______ was a famous economist.
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Henry Morton Stanley was ______
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Which of the following was Mahatma Gandhi’s novel method of fighting against the British?
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Coarser cotton was produced in many countries but finer varieties came from ____________.
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With the growth of colonial power, trade through the new ports of Bombay and Calcutta came to be controlled by ____________.
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18th Century India witnessed the decline of which port town?
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Coarser cotton was produced in many countries, but the fine varieties often came from ____________.
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Masulipatam on the Coromandel coast and Hoogly in Bengal had trade links with ____________.
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Nearly 50 million people emigrated from Europe to America and Australia ______
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The US became a colonial power in the late 1890s by taking over some colonies earlier held by ______
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Fair globalisation refers to ensuring benefits to:
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Fair globalisation would create opportunities for all, and also ensure that the benefits of globalisation are:
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| Arid soils range from red to brown in colour. They are generally sandy in texture and saline in nature. In some areas, the salt content is very high and common salt is obtained by evaporating the water. Due to the dry climate, high temperature, evaporation is faster and the soil lacks humus and moisture. The lower horizons of the soil are occupied by Kankar because of the increasing calcium content downwards. The Kankar layer formations in the bottom horizons restrict the infiltration of water. After proper irrigation, these soils become cultivable as has been in the case of western Rajasthan. |
What are the two components lacked by dry climate and high temperature?
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| Arid soils range from red to brown in colour. They are generally sandy in texture and saline in nature. In some areas, the salt content is very high and common salt is obtained by evaporating the water. Due to the dry climate, high temperature, evaporation is faster and the soil lacks humus and moisture. The lower horizons of the soil are occupied by Kankar because of the increasing calcium content downwards. The Kankar layer formations in the bottom horizons restrict the infiltration of water. After proper irrigation, these soils become cultivable as has been in the case of western Rajasthan. |
The lower horizons of the soil are occupied by what and why?
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