<span>B. It stays the same</span>
A nebula is gas, dust, and other things that form and form some sort of clould like thing. It also looks cool because of the colors it produces. I'm sure you could do a web search to find more about it, I don't take astronomy hahaha
warm fluids are less dense than cold fluids
Benthos
Option b is the answer
The sun emits electromagnetic radiation so I think they are electromagnetic waves.
