Does bleach have to be used to harden my sand dollar?
Md Ariful Islam
বিএসসি(সিএসই)
,
এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
No, bleach does not make them hard--the bleach is to make them white, and actually makes them more brittle.
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