13,000 km 3
13,000 km 3. 33,000,000 km 3. 71,000 km 3. 425,000 km 3. 40,000 km 3. 1,350,000,000 km 3. 15,300,000 km 3. Carbon Cycling. Nitrogen Cycling. Global Biogeochemical Cycles. 350-550 billion tons of carbon trapped in microbes 85-130 billion tons nitrogen in microbes
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