question: Complex chemistry is needed to carry out all the functions of what?
choices.text: hornworts water ice Muscles plants mammals asteroids organisms
choices.label: A B C D E F G H
formatted_question: Complex chemistry is needed to carry out all the functions of what? (A) hornworts (B) water (C) ice (D) Muscles (E) plants (F) mammals (G) asteroids (H) organisms