Global warming takes place when the amount of carbon dioxide in the air
A. increases
B. decreases
C. stays the same

Global warming takes place when the amount of carbon dioxide in the air increases.

I hope that this helps you !

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

uh two lol