Answer:
I think it is saying this...
A blown quiz could do a lot of damage to your grades and classes. It could cause your grades to all go downhill. It could cause your other grades to be bad too and like it says, cause a domino affect with all of your grades spiraling.
Explanation:
I hope this helps lol
He became angry thus changing the mood of the story
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In an outline capital letters can indicate many different things, but almost always they are used to signal a change in topic, or at lease a change in subtopic.