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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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Comments and other answers:

Sponges belong to a phylum called porifera which comes under invertebrates animal. so i agree on them being a real living organism.
By: neurology

Date of comment: Fri, Nov 20th 2009

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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kind  substances  sponges  

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