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. 2019 May 1;5(5):eaav0395. doi: 10.1126/sciadv.aav0395

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Fig. 3 — Duration, 24 hours; length of reach, 250 m; up to 80 hippos were present. (A) Dissolved Si concentrations. (B) Biogenic Si concentrations. All concentrations are reported as mass of Si.