Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a degree in accounting and finance from DePaul University. Vikki Velasquez is a researcher and writer who has ...

How can you work safely in the lab? What are the various steps needed in order to do so? How to spot risks, hazards and understand hazard symbols. A hypothesis is an idea about how something works ...