In ecology, overgrazing occurs when plants are exposed to grazing for too long, or without sufficient recovery periods. It is one cause of desertification and erosion. Overgrazing is also seen as one cause of the spread of non-native plants.
... have children under the age of 18 living with them, 62.2% are married couples living together, 17.0% have a female householder with no husband present, and 15.9% are ...