Reading Comprehension (RC) | Re: Supernovas are among the most energetic events in the

D A C B are the OA.

D

The new schema is based on the distinction between Type I and Type II supernovas; the original
schema is one based on the absence of hydrogen (Type I) or the presence of hydrogen (Type II). The
example of the Sun is provided as support for how the classification system works. Choice D best
summarizes this structure.

A

this one is maybe the trickiest. we have from thepassage Electromagnetic radiation — energy that is electric and
magnetic — causes the star to explode in a supernova.