They use them to be more specific instead of using general words. For example: At my school, Summit Academy, we have great teachers. Summit Academy, between the two commas, was the appositive.
Answer: with a lack of courtesy; roughly or abruptly
Explanation:
Make sure you're smiling even when dealing with tough questions asked.
Stay positive, Don't let anyone see you frown.
Ensure you use great body language when applying.
And you're appearance is sure to be well liked.
But keep it kind of formal.
Practing appreciation
Accept your imperfections
Present yourself with confidence