You asked which theory is most widely accepted describing the formation of our universe? …. Big Bang Theory
An enzyme is a catalyst which means it changes the speed at which a chemical reaction occurs. It never alters the reaction in any way or changes nay chemical properties, only the speed at which it occurs and is completely absorbed in the meantime. The substrates that are reacting just have their reaction faster.
Answer:
A group in which a star is classified according to its spectrum.
I hope this helped some!
