and a gastrovascular cavity (a "stomach") with a mouth but they do not have an anus. they possess a body wall made from two layers (the ectoderm and the endoderm) separated by a jelly-like layer called the mesoglea. other important functions like respiration and excretion occur by diffusion. see structure...
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grass get a quote news contact asi europe clarifies allegations made by norwegian tv and suggests a better solution by asie team december , projects no comments advanced sports installations europe (asie) has developed a first-of-its-kind mobile recycling solution for artificial grass on football fields...