Which Two Gases Make Up Almost All of Air's Volume

question 5

Multiple Choice

Which two gases make up almost all of air's volume?

• A) oxygen and nitrogen
• B) oxygen and carbon dioxide
• C) carbon dioxide and nitrogen
• D) carbon dioxide and hydrogen
• E) nitrogen and hydrogen

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Definitions:

Variable Cost

Costs that change in proportion to the level of production or sales volume.

Total Cost

The sum of all expenses, both fixed and variable, involved in producing a good or providing a service.

Fixed Cost

Costs that do not change in total regardless of the level of output or activity in the short term.

Average Fixed Cost

The fixed costs of production (costs that do not change with the level of output) divided by the quantity of output produced.