21. This area is characterized by summer aridity , with precipitations concentrated in autumn and winter. 22. Some of these climatic variables include humidity, aridity , winds, and atmospheric stability. 23. Alpine plants have many adaptations to aridity and intense sunlight in common with desert plants. 24. In much of the West, by contrast, aridity and high altitude often inhibit recovery. 25. They said the area's aridity and water salinity were not favorable to extensive agriculture. 26. Having poor soil and aridity , Aruba was saved from plantation economics and the slave trade. 27. The aridity of official Islam had little appeal outside the mosques and schools of the cities. 28. You're giving a new, much expanded meaning to the notion of scholastic aridity . 29. Because of the aridity , many animal species rely on protected migration corridors during droughty conditions. 30. During the reign of Augustus the climate became warmer and the aridity in North Africa persisted.
