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When we press the sponge, the air in the spaces is expelled out from the sponge. Therefore, the sponge can be compressed. The state of the sponge changes from the filled with the air to the no air form.
When we press the sponge, the air in the spaces is expelled out from the sponge. Therefore, the sponge can be compressed. The state of the sponge changes from the filled with air to the no air form.
Sponges constitute the phylum Porifera and have been defined as sessile metazoans (multicell immobile animals) that had water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella.
Facts About Sponges:
Early fossil records show that sponges inhabited Earth around 600 million years ago. That is a mighty long time for an animal without a complex nervous, digestive, or circulatory system!
Some deep-water sponges can live to be over 200 years old.
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