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?


[Q]: Constructive forces type of forces are involved when deposited rock forms deltas or barrier islands.
[A]: What type of forces are involved when deposited rock forms deltas or barrier islands?


[Q]: The term precision describes how close estimates are to one another.
[A]:
What term describes how close estimates are to one another?