The answer is nitrogen. It comprises
approximately 78% of the atmospheric air.
Nitrogen can be found in most life
processes including as a component of amino acids –amino group (NH3-). It is also involved
in the structure of nucleosides that are critical
in the formation of nucleotides and ATP.
The phrase "main component of atmospheric air" already points to nitrogen as it makes up 78% (mole basis) of atmospheric air. Nitrogen is the main element found in amino acids (amino group refers to NH3) and amino acids make up almost all important life molecules such as proteins, DNA, and ATP.
Fronts bring in rain,clouds,and storms because fronts bring in everything that nature needs to activate these things. Condensation is water in fronts that bring in rain, clouds, and storms.
