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book Ecology 6th Edition by Manuel Molles cover

Ecology 6th Edition by Manuel Molles

النسخة 6الرقم المعياري الدولي: 978-0073532493
book Ecology 6th Edition by Manuel Molles cover

Ecology 6th Edition by Manuel Molles

النسخة 6الرقم المعياري الدولي: 978-0073532493
تمرين 20
Do the oceans act as a source or a sink for phosphorus (refer to fig. 19.2)
Figure 19.2 The phosphorus cycle. Numbers are 10 12 g P or fluxes as 10 12 g P per year (data from Schlesinger 1991, after Richey 1983, MeybecK₁982, Graham and Duce 1979).
Do the oceans act as a source or a sink for phosphorus (refer to fig. 19.2)  Figure 19.2 The phosphorus cycle. Numbers are 10 12 g P or fluxes as 10 12 g P per year (data from Schlesinger 1991, after Richey 1983, MeybecK₁982, Graham and Duce 1979).
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Ecology 6th Edition by Manuel Molles
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