The Ancient Puebloans adapted to changes in their environment by utilizing a combination of techniques, including water conservation, crop diversification, and migration. During times of drought, they focused on conserving water by limiting their crop irrigation and relying on drought-resistant crops, such as beans and squash. They also diversified their crops to increase their chances of survival during times of environmental stress. In extreme cases, they would migrate to areas with more favorable conditions, such as higher elevations or areas with more reliable water sources.