| http://www.w3.org/ns/prov#value | - They wonder how a creature without any bones can operate it without hurting itself.Now, researchers at the University of California, Santa Barbara, report in the journal Science that they have an explanation,The beak, made of chitin and other materials, changes density gradually from the hard tip to a softer, more flexible base where it attaches to the muscle around the squid's mouth, the research
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