Which of the following statement is correct? Correct the wrong one.
• Soil form from sand.
• Crop rotation protects soil fertility.
• Clay soil can’t hold water for a long time.
• Upper layers of soil are made of rocks.
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Answer:
The statement soil is formed from sand is incorrect because soil is formed from the earth's crust.
The statement crop rotation protects soil fertility is correct because during crop protections if leguminous plants are planted in the soil due to nitrogen fixation the fertility of soil increases.
The statement clay soil cannot hold water for a long time is incorrect because clay soil is too sticky and have high capacity to hold water.
The statement that upper lower of soil is made up of rocks is an true because there are mixed land prevail on the earth crust.
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