The tone is thoughtful while the mood is mysterious.
Problem and solution. the problem is too many students at the high school, their solutions are sending them to the nearby middle school and bringing in portables.
Answer:
There are no dependent clauses
And is the coordinating conjunction
"It was almost December" is an independent clause
"Jonas was beginning to be frightened is an independent clause
There aren't any prepositional phrases
Compound sentence
It adds to the overall effect on the readers because it shows that Jonas is uncertain and makes the readers realize the correction that Jonas makes to make the sentence more reasonable.
Explanation: