question: What happens when humans become sexually mature?
choices.text: coelenterates communication change an ecosystem speed of movements the skin wrinkles breasts develop heart stops movement
choices.label: A B C D E F G H
fact2: Breasts develop during puberty .
combinedfact: Breasts develop when humans become sexually mature.
formatted_question: What happens when humans become sexually mature? (A) coelenterates (B) communication (C) change an ecosystem (D) speed of movements (E) the skin wrinkles (F) breasts develop (G) heart stops (H) movement