Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Prokaryotes mean they have ____ nucleus in which they store genetic material.
no

Elephants also have four molars, ____ on the top and one on the bottom on both sides of the mouth.
one

Rock cavies become sexually mature when they are about ____ to three months old.

one