What is one way that vegetation has changed since the time of the dinosaurs?

Since the time of the dinosaurs, one significant change in vegetation is the rise of flowering plants, or angiOSperms. During the Mesozoic era, the dominant plant groups were cycads, ferns, and conifers, but by the Cretaceous period, flowering plants began to diversify and eventually became the dominant form of vegetation on Earth. This shift significantly altered ecosystems and influenced the evolution of herbivorous and pollinating animals. The emergence of flowering plants also led to more complex plant-animal interactions, shaping modern biodiversity.