The right answer is Carbon fixation
Rubisco (or ribulose-1,5-diphosphate carboxylase / oxygenase) is a plant enzyme involved in the Calvin cycle and more particularly in the fixation of carbon dioxide.
Rubisco, located in chloroplasts, is the most abundant protein in plant biomass and even in total biomass.
C. the fallen trees become food for organisms
The answer for that question is a
We pick up trash all the time
Graphs, data analysis, tables, databases, calculations just to name a few
