Question

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Answer 1

Answer:

Defines :

1. Decline in the productive capacity of land for some time or permanently is known as land degradation .
2. Soil profile is defined as the vertical section of the soil from the ground surface downwards to where the soil meets the underlying rock
3. Mulching is a method of soil conservation in which the bare ground between plants is covered with a layer of organic matter
4. Contour bunding is the farming practice of plowing and/or planting across a slope following its elevation contour lines

Answer in brief

1. Bench terraces have been used for the purpose of converting hill slopes to suit agriculture.Bench terraces convert the long uninterrupted slope into several small strips and make protected platform available for farming.
2. The Fresh water is a critical resource because it is very hard to find the fresh water in natural form. There ,it is only 3% of fresh natural water in a drinkable form. Also it contains the maximum marine animals which are in extinction that means critically endangered. So Fresh water is a critical resource.