sponges are from the phylum porifera.
they are living organisms.
excretion:sponges remove waste that their bdy doesnt want by the water that moves in and out of their body.
digestion:sponges digest their food bytakind in food via the water that flows through the pores
Muscular-Skeletal:A sponge is like a tube with many pores or openings the skeleton is made of lime or silicon.
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