posted by katelynne .
Who found a way to kill germs in what year.
sorry Katelynne, I didn't see 3rd grade. You can read that page in the book but it was...
Dr Samuel Lister, in 1865. He based his technique on something as simple as handwashing discovered a few years before. The above article is really interesting.
Wjat does factor mean in math
What does factor mean in math