Blue, the color of the sky.
The most abundant gases are nitrogen and oxygen in the Earth atmosphere.
Nitrogen and Oxygen
Nitrogen (N2) is the most abundant gas in the Earth's atmosphere having percent volume of 78.8 compare to Oxygen 20.95 %, which falls on the second place after Nitrogen.
Nitrogen and Oxygen are the most common gases in the atmosphere.
The most abundant elements in the universe, in order from most to least abundant, are Hydrogen, Helium, Oxygen, Carbon, and Nitrogen. Therefore, the correct list would start with Hydrogen, followed by Helium (not listed), then Oxygen, Carbon, and finally Nitrogen. The first option you provided, "Hydrogen Oxygen Nitrogen Carbon," is almost correct but is missing Helium and has an incorrect order for Nitrogen and Carbon.
blue, 'specially SKY blue, if you get what I'm saying
Oxygen is the most common element in Earth's atmosphere after nitrogen.
Nitrogen.
The most abundant gases are nitrogen and oxygen in the Earth atmosphere.
Blue.
Blue light is scattered the most by the molecules in Earth's atmosphere.
Nitrogen is more abundant; our atmosphere is 78% Nitrogen.
Nitrogen is!
Nitrogen and Oxygen
Nitrogen (N2) is the most abundant gas in the Earth's atmosphere having percent volume of 78.8 compare to Oxygen 20.95 %, which falls on the second place after Nitrogen.
Nitrogen and Oxygen are the most common gases in the atmosphere.
Nitrogen and oxygen are the two most abundant gases in the air. They are actually elements and not compounds. The two most abundant compounds would be water vapor and carbon dioxide.