Hi there
if multipl both a) and b)
if just one then it is a)
hope this helps have a good day if u need anymore help please feel free to message me!
From small beginnings, South America grew to greatness because of maize. Just did this and it's correct.
E0 ellipticals are nearly circular, while E7s are very stretched out. Elliptical galaxies are made up of mostly old stars, and do not have much gas and dust. There is very little new star formation in these galaxies.
Mostly made of old stars