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Which organisms inhaled CO2 and exhaled 02 to 100s of millions of years, increasing the amount of O2 in the atmosphere?
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Which organisms inhaled CO2 and exhaled 02 to 100s of millions of years, increasing the amount of O2 in the atmosphere?

User Marvin Fischer
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3 votes

Answer:

Plants

Step-by-step explanation:

Plants 'inhale' CO2 and 'exhale' O2.

User Gayavat
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