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There are 2 types of sponges, 1:organic sponge: these are actually sea creatures that were extremely porous and were dried up on the shores of different sea's 2: synthetic sponges: these sponges are the sponges we use today in anything from cleaning your sink to making art. they are made of plastics and resins, so they are not so much "held together" as they are a whole item.

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16y ago

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