Nitrogen (N): Nitrogen is an element that makes up about 78% of Earth's atmosphere. It is essential for living organisms and plays a role in many chemical reactions.
Oxygen (O2): Oxygen is another element present in Earth's atmosphere and is vital for respiration. It supports combustion and plays a crucial role in various chemical reactions.
Greenhouse Effect: The greenhouse effect refers to the trapping of heat in the Earth's atmosphere due to certain gases like N2O(g), CO2(g), etc., leading to global warming.