instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
When an atom gains or loses an electron it becames a(n) ion.
answer:
When an atom gains or loses an electron it becames an?

question:
Microevolution is the process by which organisms change in small ways over time.
answer:
What is the process by which organisms change in small ways over time?

question:
Cations are formed by the loss of one or two electrons from an element.
answer:
What are formed by the loss of one or two electrons from an element?