useless trivia: What Word Means: A Tatu - A Peba - An Armadillo?

Questions

The sand on the beaches of Guam is actually?

What country is the world leader in cobalt mining, producing two-thirds of the world's cobalt supply?

The only person ever to decline a Pulitzer Prize for Fiction was Sinclair Lewis for his book?

A poem written to celebrate a wedding is called an?

These letters define what - AA?