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1. 1.

   How are soils formed?

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   Soils are formed from rocks. When rainwater gets collected i...

2. 2.

   What are the main functions performed by soil?

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   Soil produces food, cleans and retains water, regulates weat...

3. 3.

   What do micro-organisms in the soil do?

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   The micro-organisms make the soil fertile so that plants can...

4. 4.

   What are the main features of organic farming?