Write whether it is a defining or non-defining relative clause: 1. This is the house that Jack built. 2. The Taj Mahal, which is one of the seven wonders of the world is in Agra.

The two phrases shown above are defining relative clauses.

Explanation:

Distinguishing a defining relative clause from a non-defining relative clause is very simple, you just need to pay close attention to the message that the drase is passing. That's because a defining relative clause is a phrase that directly defines something or someone, like the phrases shown in the question above. On the other hand, a non-defining relative clause is a phrase that does not define people directly, but only emits information about them.

taking into account that a theme is the central topic a text treats and can be developed through a story, play, poem etc. the following are themes that can be further developed:  

my best friend jeffrey has many unusual interests. (the story could be about each of the unususal interests)

once a man gives his soul over to evil, he can never go back. (this could be a saying or a proverb)

the three sheepdogs lay around the yard all day. (it could be developed detailing how each of these sheepdogs lay around)

a priest's collar has an unusual effect upon people. (it could be developed detailing the different effect upon people)

innocence is a powerful force in a world full of corruption. (it could be developed detailing how is a world full of corruption)

king lear is a play shakespeare wrote later. (it is just a sentence and doesnt give any idea or topic to be discussed in details.

evil often wears the disguise of innocence. (this could be a saying or a proverb)

its d! the final exam asked good luck