Answer:
Enzymes serve as catalysts to many biological processes, and so they are not used up in reactions and they may be recovered and reused. However, in a laboratory setting, reactions involving enzymes can leave the enzyme unrecoverable. This process makes the enzyme at once less reactive but more stable.
To find your altitude above sea level, you would use an altimeter to find the altitude.
I think that’s substitution
8 electrons if it is a neutral atom.
