Answer:
Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. Stars start their lives as clouds of dust and gas.
Answer: A.
The first paragraph explains how the system functions, and the second paragraph describes how the system has succeeded.
Explanation: A because just took the question.
An adjective is a word that describes, such as "She was a beautiful woman". The adjective in this sentence is beautiful because if describes the woman. Hope this helps!
