You would need to introduce a list.
For example you could have: My shopping list contains of; milk, bread, and yogurt.
Another purpose is to separate clauses.
Russian folk and revolutionary songs.
You can tell they are songs because the picketers were singing as they marched.
<u><em>Subject. A subject in grammar is the first part in a sentence about which the second part, the predicate, tells something.</em></u>
Answer:
For the first question: Based on the title and the genre, what can the reader expect to occur in the myth before reading? Answer to question: Readers will most likely expect to have a World or city on top of a turtle shell.
Explanation:
<h3>In the question, it says what might a reader expect. The title is a figure of speech, or a myth. Its a myth, but if it was a real thing, it would mean a pile of bugs or objects ontop of an ordinary turtles shell.</h3>