They discovered radioactivity. They came up with the term “radioactivity.”
They conducted experiments with uranium-containing minerals and pure uranium.
They conducted experiments with uranium-containing minerals and photographic plates.
They discovered two new radioactive elements.

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo

What term is given to the border between the central alps and the southern limestone alps?

The hebrews originally migrated from a. india b. egypt c. arabia d. mesopotamia