The fertility of paddy fields can be increased by adding

Options :
  1. gypsum
  2. sodium chloride
  3. magnese
  4. calcium

Answer and Explanation :-

Answer: Option 1


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I don't get it,' Caroline said, bemused. 'She's the only one with wings. Why is that?'There were so many questions in life. You couldn't ever have all the answers. But I knew this one.It's so she can fly,' I said. Then I started to run.
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