How is the behavior of food coloring in the cool and heated water different? What caused the differences in
their behavior?

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.        

answer; emotional intelligence (ei);

answer; necessity-driven;