instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
A(n) an ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.
answer:
What forms when the metal sodium gives up an electron to the nonmetal chlorine?


question:
The majority of arthropods live on land.
answer:
Where do the majority of arthropods live?


question:
Macroevolution happens when forces of evolution work over a long period of time.
answer:

What happens when forces of evolution work over a long period of time?