Answers

2016-02-08T16:44:08+08:00
Soft, 

have porous substance originally consisting of the fibrous skeleton of an invertebrate
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2016-02-08T16:50:32+08:00
Sponges are extremely slow-moving or sessile filter-feeders that drawwater through pores and specialized filter cells to gather food. Sponges are primitive type of animal existence.
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