A) A-Osmosis, B-Photosynthesis, C-Respiration, D-Burning of fuel wood, E-Forest food chain, F-Limestone
B) A-Photorespiration, B-Respiration, C-Respiration, D-Burning of organic debris, E-Pond food chain, F-Dolomite
C) A-Respiration, B-Photosynthesis, C-Respiration, D-Combustion of fossil fuels, E-Aquatic food chain, F-Coal, oil
D) A-Respiration, B-Photosynthesis, C-Respiration, D-Burning of forest, E-Terrestrial food chain, F-Forest
Explanation
A-Respiration, B-Photosynthesis, C-Respiration, D-Combustion of fossil fuels, E-Aquatic food chain, F-Coal, oil