Question: Q: What chemical affects the onset of puberty and duration? A:
OPTIONS:
- steroids
- enzymes
- acids
- hormones
Answer: hormones

Question: Q: The oxidation of an alcohol can produce either an aldehyde or what? A:
OPTIONS:
- enzyme
- amine
- ester
- ketone
Answer: ketone

Question: Q: In places where crops grow only during part of the year, the land may be bare for a few? A:
OPTIONS:
- days
- weeks
- minutes
- months
Answer:
months