The ____________________ heading is the box at the top of each column containing a letter.

When the world starts is an example of a(n) ___________________ that Alice can detect.

Fill in the blank(s) with the appropriate word(s).

A(n) _________________ is an object that has methods that allow you to process a collection of items one at a time.

a) iterator b) loop c) conditional d) palindrome e) nested loop