The diagram below shows the amount of phosphorus (P) in the ocean and the major fluxes in and out. What is the residence time of P in the ocean based on the information below? Residence time = amount in reservoir / total sources OR sinks Rivers flowing into ocean 9.6 x 105 tons Dust blowing onto ocean 0.3 x 105 tons P in ocean 9.9 x 10¹⁰ tons Uptake by ocean plankton 9.9 x 105 tons

Applications and Investigations in Earth Science (9th Edition)
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ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Chapter1: The Study Of Minerals
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The diagram below shows the amount of phosphorus (P) in the ocean and the major fluxes in
and out. What is the residence time of P in the ocean based on the information below?
Residence time = amount in reservoir / total sources OR sinks
Rivers flowing into ocean
9.6 x 105 tons
Dust blowing onto ocean
0.3 x 105 tons
1 year
P in ocean
9.9 x 1010 tons
1 x 103 years (i.e. 1,000 years)
1 x 105 years (i.e. 100,000 years)
O 1x 1010 years (i.e. 10,000,000,000 years)
Uptake by ocean plankton
9.9 x 105 tons
Transcribed Image Text:The diagram below shows the amount of phosphorus (P) in the ocean and the major fluxes in and out. What is the residence time of P in the ocean based on the information below? Residence time = amount in reservoir / total sources OR sinks Rivers flowing into ocean 9.6 x 105 tons Dust blowing onto ocean 0.3 x 105 tons 1 year P in ocean 9.9 x 1010 tons 1 x 103 years (i.e. 1,000 years) 1 x 105 years (i.e. 100,000 years) O 1x 1010 years (i.e. 10,000,000,000 years) Uptake by ocean plankton 9.9 x 105 tons
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