Great American Biotic Interchange

The Great American Biotic Interchange refers to a significant event that occurred around 3 million years ago when the land bridge between North and South America formed. This allowed animals and plants to migrate between the two continents. As species moved across the bridge, they interacted with each other, leading to the exchange of diverse wildlife. Some species thrived in their new environments, while others faced competition or extinction. This interchange dramatically impacted ecosystems and biodiversity, shaping the flora and fauna we see in the Americas today.