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

[Q]: The majority of arthropods live on land.
[A]: Where do the majority of arthropods live?


[Q]: If an air mass forms over an ocean it is called a maritime air mass.
[A]: If an air mass forms over an ocean it is called what type of air mass?


[Q]: Intercellular connections allow heterocysts to transport fixed nitrogen to neighboring cells and to receive carbohydrates.
[A]:
What connections allow heterocysts to transport fixed nitrogen to neighboring cells and to receive carbohydrates?