What Helps Maintain Global Oxygen Concentrations in the Troposphere

question 2

Multiple Choice

What helps maintain global oxygen concentrations in the troposphere?

• A)Oxygen levels remain balanced by photosynthesis and cellular respiration.
• B)Photosynthesis replaces oxygen loss to air pollutants like NOx, SOx, and ozone.
• C)The burning of fossil fuels since the Industrial Revolution has helped maintain oxygen concentrations in the atmosphere.
• D)Excess oxygen is broken down by ozone in the upper atmosphere.

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Definitions:

Community College

A type of educational institution that provides higher education and lower-level tertiary education, granting certificates, diplomas, and associate degrees.

Student Organizations

Groups formed within educational institutions by students aiming to facilitate social, educational, professional, or cultural objectives.

Probability

The measure of the likelihood that an event will occur, quantified as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Hypergeometric Random Variable

A type of random variable that describes the number of successes in a sequence of n draws from a finite population without replacement.