Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Half-life property of carbon and other elements can be used to date fossils and rocks, among other things.

Answer: What property of carbon and other elements can be used to date fossils and rocks, among other things?


Question: Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.

Answer: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms?


Question: A neutron has neutral or no charge.

Answer:
What type of charge does a neutron have?