The storage method used for radioactive wastes generated from fission nuclear reactors must be designed to last for how long? months years centuries weeks

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong

b . streams flow into shallow areas.

f . movement of earth’s crust creates low areas that fill with water.