Final answer:
Planting more trees, burning less fossil fuels, and increasing the number of heterotrophs can help reduce erosion of water banks.
Step-by-step explanation:
Planting more trees, burning less fossil fuels, and increasing the number of heterotrophs can all help reduce erosion of water banks. Trees act as a natural barrier to prevent soil erosion, fossil fuel burning contributes to climate change which leads to increased erosion, and heterotrophs such as animals and insects can help stabilize soil through their activities.