No. The problems inherent with consuming food through a cloth mask aside, jello is made primarily of Gelatin, which no self respecting warrior from any era would knowingly consume. Any ninja you see eating jello is a fraud, and must be outed publicly and punished for their treachery.
yes
No. Jello contains gelatin.
Ninjas and Pirates hate each other because pirates eat rats and ninjas eat humans/cats/mouses
Yes. People on Gluten Free Diets can eat Jello.
no, they kill them.
yes
you eat it
Yes
Jello is not bad for you. Its not bad for you but is one of the better desserts to eat.
yess
As dried crystals its not Perishable. As ready to eat Jello then yes (as it has a limited shelf life)
Firstly, Jello is not a natural food, so elephants would never encounter it in the wild. Secondly, Jello is made from gelatin, which comes from bones and connective tissue of animals. Elephants are strict herbivores, so they would not be able to safely eat Jello.