Experienced a somewhat unintentional case in point, when the Votan Ark ships had been ruined the terraforming machines they had been carrying fell to Earth and malfunctioned, building fatal hybrid creatures for example Hellbugs and those bear-spider-armadillo items. The Tyranids then devour the vegetation. By the time they're finished with http://crowfootv567epc2.blogoscience.com/profile