Turn the given fact into a question by a simple rearrangement of words. This typically involves replacing some part of the given fact with a WH word. For example, replacing the subject of the provided fact with the word "what" can form a valid question. Don't be creative! You just need to rearrange the words to turn the fact into a question - easy! Don't just randomly remove a word from the given fact to form a question. Remember that your question must evaluate scientific understanding. Pick a word or a phrase in the given fact to be the correct answer, then make the rest of the question. You can also form a question without any WH words. For example, "A radio converts electricity into?"
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Question: Fact: pollen consists of tiny grains that are the sperm of plants.

Answer: pollen consists of tiny grains of what part of plants?


Question: Fact: Predators use sharp recurved nails to catch prey.

Answer: Predators use what to catch prey?


Question: Fact: Sound passing through a fibrous material will slow down.

Answer:
What will happen when sound passes through a fibrous material?