Question

one of the gases present in atmosphere in a very small amount. layer of atmosphere.​

Answer 1

Answer:

it is mainly oxygen, the main gases are Nitrogen, at nearly 80%, then Oxygen at around 20%, with only very small amounts (though lots in absolute numbers as the atmosphere is so huge) of other elements - argon (1%), and then trace amounts of carbon dioxide, neon, helium, methane, krypton