Add punctuation: Substantially smaller app size iOS app
A: Substantially smaller app size (iOS app)

Add punctuation: Actively using behavior exitment behavior Behavioural where the whales actively protect the injured animal
A: Actively using behavior (exitment behavior): Behavioural where the whales actively protect the injured animal.

Add punctuation: Unsure about which type of XEP file you have Do you want to know exactly what it is who created it and how to open it
A:
Unsure about which type of XEP file you have? Do you want to know exactly what it is, who created it, and how to open it?