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?"

Fact: telephones are used for communication by two people by transmitting signals.
What are used for communication by two people by transmitting signals?

Fact: Sports requires a lot of energy.
Sports requires a lot of what?

Fact: Creatures that have no internal hard tissues at all are noted for secreting large amounts of thick, slimy mucus.

Creatures that have no internal hard tissues at all are noted for what-ing large amounts of thick,?

