According to A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano, astronomers think a supermassive black hole is created when radio waves travel through space to Earth.
there is too much empty space in a galaxy.
gravity causes many, many stars to collide.
a single star or planet explodes and collapses.

The correct answer for this is : When a large star collapses it forms a massive blackhole. the fourth one is the anwer..

the author is intending to draw attention to the plight of refugees, editorial and biography support this. both workpieces make the reader empathize with enrique as well as with the other young migrants from central america. the writer, however, is using a different approach to each text.

the editorial includes strong words to persuade readers. he is trying hard to convince readers in the us to change its refugee approach.

the biography relies on narrative techniques and figurative language which the writer uses wisely in the setting, characterization, and personification to educate readers on the topic.

what is the novel plz take a picture