read the sentence from \black hole beginnings.\ as more stuff gathers, its combined gravitation grows…

read the sentence from \black hole beginnings.\ as more stuff gathers, its combined gravitation grows stronger. what question should readers ask to determine the effect in the sentence? how much stuff is combined? where does the stuff gather? why does the gravitation grow stronger? what happens when more stuff gathers?
Answer
Brief Explanations:
The sentence states a cause - more stuff gathering - and an effect - combined gravitation growing stronger. To determine the effect, one should ask what happens as a result of the cause.
Answer:
What happens when more stuff gathers?