Detailed Instructions: 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?