How is a pareto chart different from a standard vertical bar graph?

Ineed on my history if anyone can check out the last few questions i posted and i will be posting !

Aconstruction company is creating a powerpoint presentation describing how they calculate costs during each construction step. they plan to email this presentation to clients. the individual clients will be watching the presentation slide show on their own personal computers. what is the most important formatting step the company should take to make the text readable and pleasing to the eye?

Write lines of verse that rhyme to remember the following information: acid rain is a type of air pollution caused by chemicals in the air.