question: What have hard, calcium carbonate shells?
choices.text: reptiles crocodiles amphibians females young birds Gecko Octopuses hawk eggs
choices.label: A B C D E F G H
formatted_question: What have hard, calcium carbonate shells? (A) reptiles (B) crocodiles (C) amphibians (D) females (E) young birds (F) Gecko (G) Octopuses (H) hawk eggs