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

[Q]: Single-celled organisms and multicellular organisms have this in common: both have a way to get rid of waste materials.
[A]: Which characteristic do single-celled organisms and multicellular organisms have in common?


[Q]: Like skeletal muscle, cardiac muscle is striated.
[A]: Like skeletal muscle, cardiac muscle is what?


[Q]: Pulmonary plexus do we call the region on the lung root formed by the entrance of the nerves at the hilum.
[A]:
What do we call the region on the lung root formed by the entrance of the nerves at the hilum?