After the battle of stalingrad, the red army went on the and drove the invaders out of the Soviet union entirely

They went on the offensive

Explanation:

After the Battle of Stalingrad, the Red Army took the offensive and drove the invaders out of the Soviet Union entirely.

answer; /// the answer to the first question is (b) it began when people first deliberately seeds; /// and (d); // it gave people a steady food supple for the first time;

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.