🔬Macro evolution involves the evolution of whole taxonomic groups over long periods of time.
🌍Geologic evidence, such as rock layers and the fossil record, supports macro evolution.
🔍Molecular genetics provides evidence for macro evolution through comparisons of genetic codes.
🌱Life on Earth began with simple protocells and evolved into complex multicellular organisms.
💥The Cambrian explosion marked a period of evolutionary diversification and the emergence of diverse eukaryotic lineages.
What is macro evolution?
—Macro evolution refers to the evolution of whole taxonomic groups over long periods of time.
What evidence supports macro evolution?
—Geologic evidence, such as rock layers and the fossil record, as well as molecular genetic evidence, supports macro evolution.
How did life on Earth begin?
—Life on Earth began with simple protocells that evolved into complex multicellular organisms.
What was the Cambrian explosion?
—The Cambrian explosion was a significant period of evolutionary diversification and the emergence of diverse eukaryotic lineages.
Which scientific fields provide evidence for macro evolution?
—Geology, paleontology, and molecular genetics provide evidence for macro evolution.
00:00Macro evolution involves the evolution of whole taxonomic groups over long periods of time.
00:46Geological and molecular genetic evidence support the concept of macro evolution.
03:39Life on Earth began with simple protocells and evolved into complex multicellular organisms.
05:01The Cambrian explosion was a period of evolutionary diversification and the emergence of diverse eukaryotic lineages.
06:17The species biodiversity during the Cambrian explosion may have reached the level of biodiversity seen today.
