Complete the following model of carbon cycle by filling A, B, C, D, E

Complete the following model of carbon cycle by filling A, B, C, D, E and F.
complete-the-following-model-of-carbon-cycle-by-filling-a-b-c-d-e-11

A-Respiration,
B-Photosynthesis,
C-Respiration,
D-Combustion of fossil fuels,
E-Aquatic food chain and
F-Coal and oil.