question: what do paleontologists study?
choices.text: organisms hornworts dinosaur bones carbon polymorphs weather chondrichthyes density h2o
choices.label: A B C D E F G H
formatted_question: what do paleontologists study? (A) organisms (B) hornworts (C) dinosaur bones (D) carbon polymorphs (E) weather (F) chondrichthyes (G) density (H) h2o