Which agricultural adaptation addressed deficiencies in soil nitrogen within Pre-Columbian chinampa systems focused on maize cultivation?

💡 Explanation

When soil nitrogen becomes depleted, intercropping with legumes occurs because nitrogen fixation by Rhizobia bacteria in bean roots provides essential nutrients for maize growth, enhancing overall soil fertility in the chinampa system. Therefore intercropping is key, rather than terracing, aqueducts, or root selection, which address different limiting factors.

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