Average Rate of Change = 0; There is an infinite increase in the number of spores spawned every day, therefore an uncontrolled environment.

Average Rate of Change = undefined; There is no increase in the number of spores spawned every day, therefore a controlled environment.

Average Rate of Change = undefined; There is an infinite increase in the number of spores spawned every day, therefore an uncontrolled environment.

Average Rate of Change = 0; There is no increase in the number of spores spawned every day, therefore a controlled environment.