What did Alexander Fleming discover because of studying bacteria?

3 answers

penicillin
He actually discovered the antibiotic penicillin. Which test are you on? Do you need help with other answers>?

Just letting you know- I'm, Pro-Truth-Efficient
and I'm going to announce this until the end of the week -_-
I changed my name. -:
I'm good. That was the only question I was stuck on. I got a 97% Thx! And thx to "DrBob222" too. Byr.