Most nuns could indeed become pregnant if they were to have sex.
For the most part it's a hypothetical question, since the majority of nuns refrain from engaging in sexual activity.
Other nuns
Monks and nuns do the monks' and nuns' jobs now.
Yes, nuns can vote.
nuns
The nuns sleep in the nunnery in the convent.
It turns out that nuns eat anything.
Of course, nuns are people too
Nuns lived in a nunnery.
Inquiring Nuns was created in 1968.
Passionist nuns was created in 1771.
Grey Nuns was created in 1738.
900,365,670 nuns