Ocean waves travel through the medium called
"ocean water" or "salt water" or simply "water".
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
Answer:
naol may pinoy dito nag jakoI
"B" When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.