Which of the following is NOT an example of a common pool resource being overused? (poll 9927758)

Which of the following is NOT an example of a common pool resource being overused?

Pollution in the Ohio River that caused the cancellation of a boat race.

An air quality advisory in Toronto due to smog in the air

The grass on the Fanshawe College soccer field is ruined during a game against Humber.

All of the above

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