instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
World population continues to rise, even as a few countries move toward _ growth.
answer:
zero


question:
Female cats can go into heat for the first time as early as _ months of age.
answer:
five


question:
Carbohydrates come in _ main types, simple and complex.
answer:

two