Saprobes – an organism using dead organic material as food, and commonly causing its decay  Predator – seeks, kills and feeds on other organisms (usually animals, e.g. nematodes)  Symbiosis – associations between unlike organisms (usually long term)
 Saprobes – an organismusing dead organic material asfood, and commonly causingits decay Predator – seeks, kills andfeeds on other organisms(usually animals, e.g.nematodes) Symbiosis – associationsbetween unlike organisms(usually long term)