Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Inventions and Inventors
0
%
0
0
0
Back
Restart
Name one of Marie Curie's major accomplishments or discoveries
1 Development of the x-ray machine 2 the discovery of radioactive elements (one of them)
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies