Hover or tap underlined Spanish terms to see their translation and exam tip.
La atmosfera terrestre está compuesta principalmente por los gases: Nitrógeno, oxigeno, argón y anhídrido carbónico. ¿Cuál de estos gases ocupa la mayor proporción en la atmósfera?:The Earth’s atmosphere is composed mainly of nitrogen, oxygen, argon and carbon dioxide. Which of these gases makes up the largest share of the atmosphere?
Show the answer
Correct answer: b) Nitrogen.
Why it is correct
Nitrogen makes up about 78% by volume of dry air, followed by oxygen at roughly 21% and argon at nearly 1%.
Why the others are not
- a) Oxygen is second at about 21%.
- c) Argon is only about 0.93%.
- d) Carbon dioxide is a trace gas around 0.04%.
How to work it out in the exam
- Most abundant gas in air: nitrogen (78%).
Where this question comes from
- Región de Murcia · 2024 · 1ª convocatoria · CY Tipo 1 · question 30 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.