What is the role of carbon dioxide in photosynthesis

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. Then, via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.