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: Food consists of organic molecules that store electrical energy.
Organic molecules that store electrical energy can be found in what?

Fact: tree squirrels generate heat mainly by keeping their metabolic rate high.
What generate heat mainly by keeping their metabolic rate high?

Fact: speciation events are an example of something that occurs over geologic time above the level of species.

speciation events are an example of something that occurs above the level of what?