What are the most important gases in the air?
The most important gases in air are oxygen, nitrogen, argon helium krypton
Sunlight: This is probably the most important need for all living organisms, because it is the source of all energy. It also provides heat for plants and animals. Air is made up of several gases, but the two most important gases are Oxygen and Carbon dioxide. Without oxygen, animals will die, and without carbon dioxide, plants cannot survive.
diffusion is faster in air because air consists of different gases . gases have most intermolecular spaces and least intermolecular attraction. since gases have least intermolecular attraction they have negligeble mass & so they are lighter . since they are light they expand and rise upwards or fuse with other molecules in air . ( thank you , yours sincerely , jimmee)