PLEASE HELP ME !! I’d appreciate it if you’d answer both questions but if you just answer one i’m fine with that as well!

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

As a small change in a person's dna can cause a genetic disorder

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c. ozone layer hole d. increase in sea levels