The "host" (who was known by the name of U.N. Owen) who invited the guests to the island was actually Isaac Morris, who was manipulated by Justice Lawrence Wargrave.
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No it is not. It has none of the same characters or storylines.
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None. If it was advantageous to the host in any way, no matter how minor, it would be considered a symbiont not a parasite.
None they need to know how to interview
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None. Animals that can digest cellulose host special bacteria to digest the cellulose molecules, and humans do not host these.
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