Given a scientific question, generate a correct answer to it.

[EX Q]: Clubmosses are not true mosses, though, because they have what?
[EX A]: vascular tissue

[EX Q]: What type of lines run next to each other?
[EX A]: contour lines

[EX Q]: What is the process of moving air into and out of the lungs called?
[EX A]:
ventilation