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: Metallic bonds gives a coil of copper wire the ability to conduct electricity well.

Answer: What gives a coil of copper wire the ability to conduct electricity well?


Question: Molar masses can be used to determine the mass of a quantity of material.

Answer: What can be used to determine the mass of a quantity of material?


Question: Sea animals are natural sponges made of.

Answer:
What are natural sponges made of?