What process does carbon move from an abiotic resource into organic matter?

CO2 used by plants for Photosynthesis. I hope this helps.

CO2 used by Plants for Photosynthesis:
The primary producers (green plants), also known as photoautotrophs, are constantly removing carbon dioxide from the atmosphere through the process of photosynthesis (the process in which green plants make food for themselves in presence of sunlight). Certain bacteria, also referred to as chemoautotrophs, use carbon dioxide to synthesize the organic compounds they need.