Given a scientific passage and an answer, generate a question for the given answer.

[Q]: Passage: The problem doesn't stop with plowing. Crops are usually planted in rows, with bare soil in between the rows. In places where crops grow only during part of the year, the land may be bare for a few months. Answer: months
[A]: In places where crops grow only during part of the year, the land may be bare for a few?

[Q]: Passage: Adulthood is divided into the stages of early, middle, and late adulthood. Answer: three
[A]: Adulthood is divided into how many stages?

[Q]: Passage: Gases assume the shape of their container. Answer: gas
[A]:
Which form of matter assumes the shape of its container?