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?"

[EX Q]: Fact: Acid rain has a negative impact on plants.
[EX A]: What does acid rain have a negative impact on?

[EX Q]: Fact: Predators use sharp recurved nails to catch prey.
[EX A]: Predators use what to catch prey?

[EX Q]: Fact: cucumbers and corn possess a mutualism in which both species benefit.
[EX A]:
cucumbers and what possess a mutualism in which both species benefit?