While traveling in South America, Darwin and others observed

Last updated: 7/9/2022

While traveling in South America, Darwin and others observed marine shell fossils in the Andes Mountains at ~12,000 ft above sea level. He then observed a massive volcanic eruption and earthquake that raised the coastal shelf by 8 ft. He also came to understand that the Earth is very old. What did these observations help Darwin conclude? There have been many extinctions in Earth's history The sea level of oceans was once much higher than previously thought Shelled marine organisms evolved from species that lived on land There has been enough time for divergence in organisms to create all of modern biodiversity