Deforestation: as humans cut down massive amounts of trees, it can greatly affect the water cycle. Normally, during the water cycle, water vapor is released from plants during photosynthesis in the transpiration stage, which also creates a localized humidity. However, when increasing amounts of trees are cut down, it can affect the weather in many different places, as there will be less rain without the extra water vapor from the trees. In the area where the trees are being cut down, there is an increased risk of droughts and flooding, as land becomes drier and less stable, and there is an increase in runoff and leaching because there is no water being soaked up by the plants.