Marine Biology is the scientific study of organisms that inhabit the sea. The study includes nearly all the sub-disciplines of Biology and other cross-disciplinary subjects that are applicable for investigating marine organisms. These may include Biochemistry, Microbiology, Taxonomy, Ecology, Evolution, Marine Science and Environmental Science.
(Espace,NUS High)
When worms burrow through sand, they eat substrate and filter out all their organic material and ingest it, the substrate without its organic components is now poop you see here
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