Part 1. Definition
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?"
Part 2. Example
Fact: pesticides can harm animals.
Answer: What can harm animals?
Explanation: It's a good question because it is formed by simply replacing the word "pesticides" with "what".
Part 3. Exercise
Fact: a disease in which osteoclasts are more active than osteoblasts results in a decrease in bone mineral density.
Answer:
What, which results in osteoclasts being more active, results in decreased bone mineral density?