Suppose you're sharing a presentation with several classmates, but you're not sure if they all have PowerPoint. What's the best way to ensure everyone will still be able to view your presentation

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.        

try something like republic or democracy joined or something because its talking about a election party.

answer; the above statement is (true);