Q: What two gases are the main components of air?


Read this paragraph and choose the correct option from the provided answers:

A: Other examples of liquid mixtures include salt water and salad dressing. Air is a mixture of gases, mainly nitrogen and oxygen. The rock pictured in the Figure below is a solid mixture.

 Choices:

- oxygen and helium

- carbon and oxygen

- hydrogen and helium

- nitrogen and oxygen


A:
nitrogen and oxygen