What Helps Maintain Global Oxygen Concentrations in the Troposphere

question 28

Multiple Choice

What helps maintain global oxygen concentrations in the troposphere

• A)prevailing winds; air pressure.
• B)upwellings; the tilt of the earth.
• C)the Coriolis effect; relative humidity.
• D)wind; cloud cover.
• E)turbulent gusts; distance from the equator.

---

Definitions:

Fixed Costs

Business expenses that are not affected by changes in the level of production or sales, such as rent and salaries.

Total Variable Costs

The sum of expenses that change directly with the level of output or production volume.

Average Fixed Cost

The total fixed costs of production divided by the number of units produced, indicating cost per unit.

Average Total Costs (ATC)

The total cost of production (fixed plus variable costs) divided by the total quantity of output produced.