question: What is used for determining direction?
choices.text: chemical messengers speedometers thermometers barometric pressure trees and flowers magnetic fields lamphreys feedback mechanisms
choices.label: A B C D E F G H
fact2: Compass needles line up with magnetic fields.
combinedfact: Magnetic fields are used for determining direction.
formatted_question: What is used for determining direction? (A) chemical messengers (B) speedometers (C) thermometers (D) barometric pressure (E) trees and flowers (F) magnetic fields (G) lamphreys (H) feedback mechanisms