Diffusion is one form of passive transport that doesn't require the expenditure of cellular energy. A molecule can diffuse passively through the cell membrane if it's lipid-soluble, uncharged, and very small, or if a carrier molecule can assist it. ... The assisted process is known as facilitated diffusion.
Got this off google but still hope it helps :)
Without matter theyre is no nature
B: used up in the process
When photosynthesis occurs the plant takes in sunlight and CO2 and converts it into (C6H12O6) or sugar and O2
