Environment & Ecology · Urban Heat Island

Consider the following statements related to urban greening and temperature regulation in megacities: I. Evapotranspiration is a key mechanism through which vegetation cools urban areas by transferring heat and moisture to the atmosphere. II. In regions receiving less than 1,000 mm of annual rainfall, grasslands and croplands may increase urban temperatures instead of reducing them. III. Trees are ineffective in moderating urban heat during extreme summers because they reduce transpiration to conserve water. IV. The temperature regulation capability of vegetation depends on local climatic conditions, particularly water availability. How many of the above statements are correct?