Give three uses of suspension

Paint (Use of suspension) Mud or muddy water, is where soil, clay, or silt particles are suspended in water. Flour suspended in water.

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.