Which statement correctly compares competing theories on Mayan civilization’s collapse?(1 point)
1 The overpopulation theory and the warfare theory both explain that warfare led to population decreases.
2 The environmental degradation theory and the warfare theory both explain how climate change led to civil unrest.
3 The overpopulation theory and the environmental degradation theory both explain that warfare led to food shortages.
4 The overpopulation theory and the environmental degradation theory both explain that droughts caused famines in the classical period.