The clears fibers enclosed in a membrane that refract and focus light to the retina are called the ____.

A typical white cotton T-shirt provides how much SPF?

A. 15 B. 5 C. 20 D. 10

Basics of hiring a successful employee include: 

A. checking references after hiring a person. B. discussing policies and procedures early. C. having a set pay scale for new hires. D. hiring the first person to apply.