question: What are naturalized on every continent except Antarctica?
choices.text: arthropods pollinators liverworts hornworts Corvidae mosses glowworms otters
choices.label: A B C D E F G H
formatted_question: What are naturalized on every continent except Antarctica? (A) arthropods (B) pollinators (C) liverworts (D) hornworts (E) Corvidae (F) mosses (G) glowworms (H) otters