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?"

[Q]: Fact: soil loss causes a river to become deeper and wider.
[A]: what loss causes a river to become deeper and wider?


[Q]: Fact: thirst is used to make chickens realize they need to replenish its bodily water.
[A]: what uses thirst to realize it needs to replenish its bodily water?


[Q]: Fact: Heating salt water causes the water to steam while the salt remains.
[A]:
What would remain if you were to make a pot of salt water start to steam?