Which benefit resulted when Aztec chinampa agriculture extended into saline lake Texcoco shoreline?

💡 Explanation

When chinampas reached saline areas, naturally occurring halophilic cyanobacteria in the soil performed nitrogen fixation because of their adaptation to high salinity, thereby enriching the soil with available nitrogen. Therefore nitrogen fixation through bacteria results, rather than reduced methane, natural pest control, or greater phosphorus which are enabled by different mechanisms.

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