List to all companies we all know today that came from the split​

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.        

is there answer choices?

the density would be a smaller number.

answer; humanistic;