Biology
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?

Chordata
Arthropods
Annelida
Echinodermata

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Biology
Which statement describes decomposers?

Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems
Decomposers can produce their own source of energy and can sometimes act as primary producers
Decomposers are those organisms that recycle matter in the ecosystem
All listed here

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