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Each coordinating conjunction has a slightly different meaning and will have a different effect on the joined clauses.
We sat in the back of the theater, for all of the good seats were taken.
Class was cancelled, so we met in the library.
Viruses can corrupt your files, and they can damage your hard drive.
Chickens can’t fly, nor can they run very fast.
Electric cars do not use gasoline, but their batteries are charged using conventional energy.
The average annual temperature is rising, yet last winter was the coldest on record.
In the fall I will go to medical school, or I will join the Peace Corps.