(Question)
Q: What is it called when large objects are broken down into smaller pieces?    Choices:  - decay  - metamorphosis  - evolution  - weathering  A:
(Answer)
weathering


(Question)
Q: Oxytocin, which stimulates the contractions of labor, is a type of what?    Choices:  - metabolite  - inhibitor  - steroid  - hormone  A:
(Answer)
hormone


(Question)
Q: What element enters the body when an organism breathes?    Choices:  - helium  - water  - methane  - oxygen  A:
(Answer)

oxygen