Cyanobacteria helped produce O2. Because it helped releasing O2 into the atmosphere, today we see different animals because Cyanobacteria helped reduce the poor oxygen in the atmosphere.
Hey it's me Ariana forms chool
Giants:C
Dwarfs:D
Main Sequence stars:B
Supergiants:A
I hope this helped you!
I think that I might be HYENA.
Since they don’t really kill they are mostly “scavengers”
I am not 100% sure though. I hoped I helped at least a little.