Human activity that can affect the water cycle and the most important factor that affects the rate of evaporation?

Human activities that can affect the water cycle include deforestation, urbanization, agriculture, and industrial activities. These activities can lead to changes in land use, increased runoff and erosion, pollution of water sources, and alterations in the natural flow of water.

The most important factor that affects the rate of evaporation is temperature. Higher temperatures lead to increased evaporation rates, as more energy is available to convert liquid water into water vapor. Other factors that can affect evaporation rates include humidity, wind speed, and surface area of the water body.