What is a biotic factor of the environment A CO2 exhaled B o2 used by animals C water d leaves?

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September 17, 2014 10:57PM

The Carbon Cycle is the process in which carbon passes through the environment. The CO2 is exhaled by animals, who inhale the O2 released by plants. The plants absorb the CO2 through their stoma and use it in the reaction during photosynthesis for energy production.