Answer:
Fusion
Explanation:
Supernova Definition:
The supernova occurs after fusion begins to pile up iron in the high-mass star's core. Because iron fusion cannot release energy, the core cannot hold off the crush of gravity for long. In the instant that gravity overcomes degeneracy pressure, the core collapses and the star explodes.
Fun Fact!
Approximately one supernova occurs every second. Supernova happens more often than you might think: One occurs somewhere in the universe every second!
Answer:
D
Explanation:
The Sun because it is the friendly renewable source of energy and also it is the costless renewable source of energy
You didn't put any answer choices but it's to stop the ozone layer from going away.
The answer is cementation that is a major process.
