The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?
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A volcano that is not expected to erupt again is called
Any undesirable change in physical, chemical or biological characteristics of air, land, water or soil is called?
Who first determined the value of G (gravitational constant)?
Which of the following metals is stored in kerosene oil?
According to Malthusian theory of population
____ project is an ambitious Union Government Project which integrates the efforts to clean and protect the Ganga river in a comprehensive manner.
Malthusian theory is associated with which of the following ?
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