question: What do feedback mechanisms regulate? 
choices.text: pancreatic secretions flower petals and fruits speed of movements trees and flowers Two or more sets of alleles 70-75 degrees Fahrenheit tropical cyclone antigens that cause allergy
choices.label: A B C D E F G H
fact2: Hormones regulate pancreatic secretions.
combinedfact: Feedback mechanisms regulate pancreatic secretions
formatted_question: What do feedback mechanisms regulate?  (A) pancreatic secretions (B) flower petals and fruits (C) speed of movements (D) trees and flowers (E) Two or more sets of alleles (F) 70-75 degrees Fahrenheit (G) tropical cyclone (H) antigens that cause allergy