Answers

2015-06-23T10:14:37+05:30

if pupa break the cocoon by itself and come out then we cannot spin the silk as it is discontinued. so we have to boil pupa in hot water
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2015-06-23T11:36:01+05:30
Pupa will convert to cocoon so then we can't make silk so we have to boil pupa in boiling water.
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