Question 3. Stoichiometry and nutrient limitation of production. [9 points total]. In a certain region of the ocean, you discover that the average…

Hello, can someone explain the reasoning for the answer to this question, thank you!!

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Question 3. Stoichiometry and nutrient limitation of production. [9 pointstotal]. In a certain region of the ocean, you discover that the average organicmatter produced by phytoplankton is characterized by the following composition:C66(CH2)18(CH20)36(NH3)23(H3PO4).(a) Calculate the C:N:P stoichiometric ratio of this organic matter. [1 point](b) By combustion, you also determine that to remineralize this organic mattercompletely, you need 175 molecules of Oz for each atom of phosphorus. Writedown the bulk equation of photosynthesis for this organic matter, following theequation:A . CO2 + B . HNO3 + C . H3PO4 + D . H20 = Organic matter + 175.02(Determine the factors A, B, C, D to write the equation) [1 point](c) You also find that the stoichiometric content of iron (Fe) in this organic matteris 0.5.10-3 times the P content. Suppose water upwelling to the surface has atotal carbon concentration of 2300 mmol m-3, a nitrate concentration of 40 mmolm-3, a phosphate concentration of 1 mmol m-3, and an iron concentration of 2nmol m-3 (1 nmol = 10-3 mmol). First, determine which element is the mostlimiting among the ones listed above (i.e. the first element that would limitproductivity, if elements were taken up by phytoplankton at the concentrations

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