Our resources are limited and the demand for all resources is increasing at an exponential rate.
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B
Sustainable management of natural resources is required so that these resources last for the generations to come.
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C
Advantage of watershed managements does not includes prevention of droughts and floods.
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D
In Khadin system of water harvesting the water percolates into the soil and remains stored their as sub-soil water.
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Solution
The correct options are A Our resources are limited and the demand for all resources is increasing at an exponential rate. B Sustainable management of natural resources is required so that these resources last for the generations to come. D In Khadin system of water harvesting the water percolates into the soil and remains stored their as sub-soil water.
Advantage of watershed managements includes management of droughts and floods.
In Khadin system of rainwater harvesting the surface runoff is stored in an earthen embankment which is built across the lower hill slopes. This embankment not only helps to increase moisture in the submerged land, but also prevents the washing away of the topsoil and the manure added to it.