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Hover or tap underlined Spanish terms to see their translation and exam tip.

El aire que constituye la atmósfera terrestre, está compuesto por gases de diversas clases, siendo los más abundantes, el nitrógeno, el oxígeno, el argón y el anhídrido carbónico, ¿Cuál de ellos es el que ocupa más proporción en la atmósfera? .. :The air of the Earth’s atmosphere is made up of various gases, the most abundant being nitrogen, oxygen, argon and carbon dioxide. Which takes up the largest share of the atmosphere?... :

Show the answer

Correct answer: b) Nitrogen.

Why it is correct

Nitrogen is about 78%.

Why the others are not

  • a) That is about 21%.
  • c) That is about 1%.
  • d) That is a tiny fraction.

How to work it out in the exam

  1. Nitrogen 78, oxygen 21.

Where this question comes from

Try it: Term pairs

Pending instructor review. Machine translation, not reviewed.