Which environmental benefit accrued when the chinampa cultivation system expanded in Tenochtitlan's construction?

💡 Explanation

When chinampas expanded, increased cultivation area meant greater evapotranspiration because plants draw up subsurface water and release it through their leaves, leading to increased local humidity. Therefore elevated humidity resulted, rather than pest reduction, increased dissolved oxygen, or decreased migration, which didn't rely on the transpiration process.

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