In which sentence from "black hole beginnings" is the effect underlined?

as more stuff gathers, its combined gravitation grows stronger.

once again, the star stuff plunges inward under its own weight.

as the nuclei meld, a smidgen of their matter vaporizes into energy.

once the nuclear reactions stop, the star's center begins to cool.

Making a story about a myfwa(wolf and human) this is what i have is it good? my name is sylvia stone its been years since bunny's trusted us wolves and its stupid how this on bunny sellina bully's me only because i threatend to eat her years before we trusted each so mabey u might say she deserves revange is say i kill her once we start war harsh? ? if it is i dint give a single heck about it. plz tell me what to fix and u can edit it if u would like the pic is what i want her to look like i didn't want to show her face yet.