What is the different between florencence and phosforecence?

What is crusty stuff on the inside of some pipes? Toilet making noise all day long? How do you find out who asked an anonymous question on ask.fm? On Gmail in older view how do you block people? Can type L copper poison you when used for medical gas? What does xo mean in text? What does Bring Your Own Phone mean? Is screen sharing safe? How can a message be written on my message borad? Where can one purchase a 26 inch lcd tv? How many gallons per minute in home well is enough? What are the biggest downsides of running your business in a managed hosted environment rather than having your own servers and software? How much does kendall and kylie Jenner weigh? Is here an area code 021 in Mexico? Timeline of 1982? Are the old big dish satellite receiver good for anything? Where is area code plus 44 704? What is the setting to make the screen flip on the iPhone 5c? Where is more potential energy at pole or at equator? How do you hide MySpace comments but keep the link to add a comment?