Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: To determine the atomic weight of an element, you should add up protons and neutrons.

A: How do you determine the atomic weight of an element?
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Q: The term technology describes the application of knowledge to real-world problems and is practiced by engineers.

A: What term describes the application of knowledge to real-world problems and is practiced by engineers?
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Q: Environmental changes is most responsible for the extinction of most species of plants and animals that have lived on earth.

A:
What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?
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