How do river deltas change over time?

River deltas change over time due to sediment deposition, erosion, and hydrological processes. As rivers carry sediment to their mouths, they build up land, creating new features and altering the delta's shape. Additionally, factors such as sea-level rise, human activity, and climate change can influence delta dynamics, leading to land loss or transformation. Over time, these processes result in shifts in ecosystems and habitats within the delta.