What is not a trace gas found in our atmosphere oxygen, argon, carbon dioxide or neon

Argon is not a trace gas because it makes up 0.934% of the atmosphere.

no statements shown

the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl