Sponges are made of what kind substances?
Question asked by: knowitall
Many people think that sponges are synthetic materials.
However, believe it or not, a sponge is a real living animal!
By: Unknown
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Sponges are made up of spongin fibres. spongin is a fibrous, proteinaceous material.
By: anutrivedi
Date of comment: Wed, Oct 31st 2007
Comments and other answers:
Sponges are made up of spongin fibres. spongin is a fibrous, proteinaceous material.By: anutrivedi
Date of comment: Wed, Oct 31st 2007
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