Why is “one” underlined in the previous question?

using of a carton that can be used for folding which would be a factor rather than using my hands to fold.

It is estimated that you cannot fold a paper more than 7 times no matter what factors you use, well in my theory

Explanation:

cats appear to have glowing cat eyes because the back of their eyeballs includes a special reflective surface called the tapetum lucidum. this lets them see better during the night, giving them a much better vision.

ability to mate mark me brainliest