it was discovered by ace
.... No?
Francium was discovered by Marguerite Perey in 1939.
its a element on earth , and georguis agricola discovered it in 1530...
The oven was discovered by O. Ven, for whom it is named, who also discovered the Ven diagram.
Graham
Joseph Black discovered CO2 hope this helps!!! x
by alex k. in 1762
In 1502 by the Portugese.
boyle
Adam - year 0
Operant conditioning was discovered by psychologist B.F. Skinner in the 1930s.