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.

Environmentalists warn that ____ turtle species are in severe decline from over-exploitation.
six

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

Gestation is approximately one year, and calves are suckled for ____ months to twelve months.

nine