Answer:
For wind, factors like vegetation cover, surface roughness, and windbreaks (e.g. trees, walls) can best prevent erosion. Vegetation cover helps by anchoring the soil with its roots, surface roughness slows down the wind and reduces its erosive power, and windbreaks block the wind and protect the soil behind them.
For water, factors like drainage systems, terracing, and vegetation cover can best prevent erosion. Good drainage systems help to reduce the amount of water runoff and prevent excess water from flowing over the soil surface, while terracing involves creating leveled land surfaces with small walls or ridges that slow down the flow of water and prevent it from carrying away soil. Vegetation cover also helps to anchor the soil with its roots and slow down the velocity of runoff water.