Land degradation is when the land becomes less healthy and has fewer plants and animals living in it. It is like getting sick. When land becomes degraded, it means that the soil is becoming less fertile and it can't support as much life as it did before. This can happen when people cut down too many trees, overgraze animals, or use too many pesticides. Degraded land is bad for the environment because it can make it harder for plants and animals to survive, and can make it harder to grow food.