Green house effect is mainly caused by excess of ….. in the atmosphere? A) Carbon dioxide B) Carbon monoxide C) Nitrogen D) Hydrogen sulfide Related MCQs: Aslia has three types of balls red green and blue. If their ratio is 2:3:5 what percent of balls are green? All weathers are mainly caused by: Which layer of the atmosphere is mainly responsible for weather process? House of Lords is the Upper House of the Parliament of?