instruction:
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?"
question:
Fact: Endocrine hormones move from place to place in the body through the blood.
answer:
Endocrine hormones move from place to place through the?


question:
Fact: Acetic acid can cause harm to the eyes.
answer:
What can acetic acid do to the eyes?


question:
Fact: Gull eggs have hard shells made of calcium carbonate.
answer:

What are gull shells made out of?