These words which are used before a noun or a pronoun to show its
relationship with another word in the sentence are called prepositions.
1. 20% (actually 22.3 % but it's the same estimate).
2. Religion.
Ally sees butterflies as a symbol of what it would be like to not have dyslexia.
It could be a metaphor since you are comparing them to reptiles without using like or as.