The director-general fo the WorldHealthOrganization has morethanoncewarnedthatanotherinfluenza ____ based on avianinfluenza or Asianbird flu is fastapproaching. (A)toxin (B)rivalry (C)pandemic (D)symbiosis
33. Manyfungiproduceantibiotics, for example, penicillin, thatstopbacterialgrowth. Which is the evolutionaryadvantage to
the fungus of secretingantibacterialchemicals?
(A)defense: preventingbacteriafrominfecting the fungus (B)defense: preventingbacteriafromkillingfungalspores (C)predation: consuming the bacteria (D) symbiosis: attractinghelpfulbacteria (E)competition: destroyingbacteriathatcompete for theirfood