question: What protects fish from predators and parasites and reduces friction with the water?
choices.text: Muscles a beak keratin black weapons pouches being tasty crocodiles
choices.label: A B C D E F G H
formatted_question: What protects fish from predators and parasites and reduces friction with the water? (A) Muscles (B) a beak (C) keratin (D) black (E) weapons (F) pouches (G) being tasty (H) crocodiles