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They allowed Andean communities to overcome challenging environments, including steep slopes, thin soils, extreme and sharply fluctuating temperatures, and scant or seasonal rainfall. Fed by artificial pools and elaborate irrigation systems, andenes significantly expanded the area of cultivable land. They also conserved water, reduced soil erosion and – thanks to stone walls that absorbed heat during the day and then released it at night – protected plants from severe frosts.
อ่านต่อเพิ่มเติม โรงเรียนบ้านมะขามเอน
สาระสำคัญ สตรีมีครรภ์
โพสต์โดย : lee
