Environment & Ecology · Environment

Consider the following statements regarding heat stress and wet-bulb temperature: I. Wet-bulb temperature accounts for both temperature and humidity to assess human heat stress limits. II. A wet-bulb temperature of 35°C is considered the upper limit of human adaptability beyond which sustained survival becomes impossible. III. Urban heat islands can exacerbate heat stress due to concrete structures, low tree cover, and poor ventilation. How many of the above statements are correct?