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What is cover of land percent in earth.
29%
What is use of land
Cultivation, grazing, mining, setting up industry and settlement.
What factors should be taken into consideration for maximum benefit of land
Nature and quality of land and need of community
How can we conservation of land done
Checking for further spread of desert, adopting scientific technique, conserving soil and forest and providing irrigation facility
On what factor cultivation of land depends
Relief fertility of soil availability of water needs of people
What is humus
Fine vegetal and animal remains are called humus which add fertility to soil.
How many year does soil formation takes
More than thousands of year.
How is black soil formed
That is formed by weathering of volcanic rock
In which region rainwater harvesting is mostly practised
Arid and semi arid region
On what type of soil leaching is common
Top soil
