10. Carton Cycle and Reservoirs (20 points) Consider diagram below when annwerin
ID: 120145 • Letter: 1
Question
10. Carton Cycle and Reservoirs (20 points) Consider diagram below when annwering the Mowing stions: a) Identify the fellowing reservoirs: (4 poines) B: D: E: 1020 50 91.6 100 b) Write cach of the reservoirs below that comprise tve biological pump. (4 poines What is the residence time of carbon within the deep occan? mathematical work. (4 points) Show all of your c) d) Circle the arrow representing photosynahesis taking carbon out of thc atmosphore into land organisms. Write the chomical reaction for this process. (4 points) e) Write two reservoirs that are comprised of primarily organic carbon and tw reservoirs that are compeised of primarily inorganic carbon. (4 points)Explanation / Answer
a)
A: Vegetation
B: Marine Biota
C: Intermediate and deep ocean
D: Atmosphere
E: Soil and Detritus
F: Sediments
b) The biological pump of the carbon cycle consists of the following reservoirs:
Atmosphere--> Surface ocean--> Marine Biota --> Intermediate and deep ocean
c) Residence time for C in the deep ocean = Total C/ change per year
Total carbon= carbon in surface ocean, Marine Biota and Intermediate and deep ocean = 1020 + 3 + 38100 = 39123 Gt
change per year = 91.6+9.9 = 101.5 Gt/yr
Therefore Residence time = 39123/101.5 = 385.45 Years
d) Circle the arrow from D to A indicating the quantity of 100.
CO2 + 2H2O + photons [CH2O] + O2 + H2O.
carbon dioxide + water + light energy carbohydrate + oxygen + water
e) Two reservoirs that are comprised primarily of organic carbon:
Vegetation
Marine Biota
Soil and Detritus
Two reservoirs that are comprised primarily of inorganic carbon:
Atmosphere
Surface Ocean
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