Which two of these processes remove airborne co2 from earth’s atmosphere? 1. photosynthesis 2. respiration 3. carbon sequestration 4. burning fossil fuels

Photosynthesis and carbon sequestration

Explanation:

Photosynthesis is a natural way of fixing carbon into the organic molecules and carbon sequestration is an active artificial method of removing the CO2 gas from the atmosphere and store it in the reservoirs.

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