Why have poisonous snakes become such a problem on the African savanna? a Increases in fires have eliminated all wildlife except those that live below ground b Genetically engineered snakes released onto the savanna have mated with native snakes to produ-super poisonous snakes c Climate change has caused mammals to only come out at night when its cooler, and reptiles to dominate the daytime d The loss of savanna wildlife has led to an increase in mice, a favorite with snakes