| http://www.w3.org/ns/prov#value | - According to the BBC, the researchers think the turtles had initiated sex in the surface waters of the lake that once existed on the site, and were then overcome as they sank through deeper layers of water made toxic by the release of volcanic gases.We have demonstrated quite clearly that each pair is a male and a female, and not, for example, just two males that might have died in combat, Joyce t
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