question: most what are regulated by necessarily controlling uncertainty?
choices.text: hormones antigens stoma cars animals motorcycles navigation safe driving
choices.label: A B C D E F G H
fact2: Feedback mechanisms are necessary to control uncertainty.
combinedfact: Most hormones are regulated by necessarily controlling uncertainty
formatted_question: most what are regulated by necessarily controlling uncertainty? (A) hormones (B) antigens (C) stoma (D) cars (E) animals (F) motorcycles (G) navigation (H) safe driving