Given a statement, generate a question such that the answer is contained in that statement.

Q: Streptococcus can be spread directly from one person to another.

A: What can be spread directly from one person to another?
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Q: a thinning and weakening of bone is an affliction in which osteoclasts are more active than osteoblasts

A: What are more active than osteoblasts?
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Q: Crustaceans change color to protect themselves against carnivorous animals.

A:
What color do rustaceans change to protect themselves against carnivorous animals?
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