✔ Correct Answer: C. Photosynthesis

The correct answer to the question “Carbon is an integral part of an ecosystem. It is cycled throughout the ecosystem as it is used and then reused. It is necessary for all life to exist. Name the process in which plants uses carbon dioxide?” is Photosynthesis. This question belongs to Everyday Science. Practice the related questions below to master this topic for your FPSC, PPSC and NTS tests.