Trivia · Ages 12–15
Riddle #183
Which two gases make up about 99% of the air in Earth's atmosphere?
You solved this one before
Answer: Nitrogen and oxygen
Roughly 78% nitrogen and 21% oxygen; argon, carbon dioxide and the rest share the last 1%.
Trivia · Ages 12–15
Which two gases make up about 99% of the air in Earth's atmosphere?
You solved this one before
Answer: Nitrogen and oxygen
Roughly 78% nitrogen and 21% oxygen; argon, carbon dioxide and the rest share the last 1%.