31. Which one of the following is
a step in the formation of soil ?
O weathering of rocks
O
earthquakes and volcanic
eruptions
O
addition of humus
O
all are involved in the
formation of soil.
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31. Which one of the following is
a step in the formation of soil ?
O weathering of rocks
O
earthquakes and volcanic
eruptions
O
addition of humus
O
all are involved in the
formation of soil.
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Answer:
all are involved in formation of soil
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Answer:
All are involved in the soil formation.
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