Plants in a rainforest contribute to the water cycle primarily through the process of transpiration. They absorb water from the soil through their roots and release water vapor into the atmosphere through their leaves. This released moisture adds to the humidity and helps form clouds, which eventually leads to rainfall, continuing the water cycle. Additionally, rainforests retain a large portion of moisture within their ecosystem, recycling water between the forest and the atmosphere, which supports local and global weather patterns. In detail, rainforest trees act like giant pumps, lifting water from the ground and releasing it into the air, with a single tree releasing about 100 gallons of water daily through transpiration. This process cools the air and increases atmospheric moisture, promoting cloud formation and precipitation. The moisture generated by rainforests also influences rainfall far beyond the forest itself, affecting weather in distant regions. Deforestation disrupts this cycle by reducing transpiration, leading to decreased rainfall and potentially causing droughts. Thus, rainforest plants play an essential role in sustaining the hydrological cycle by maintaining atmospheric moisture, regulating climate, and ensuring the continuous movement of water on Earth.