Answer:
A galaxy is a collection of millions of stars, while a solar system is a star and the planets around it.
Explanation:
You live in a solar system, we revolve around our sun and so do the other planets making up a solar system
But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London.
It has warmed roughly 1.33°F.
It is a part of the cell cycle.
I think tracheae which is B not sure tho
