Extinción masiva: los dinosaurios

The video explores the extinction of dinosaurs, a topic of debate in paleontology. Two main theories are discussed: the catastrophist theory, which attributes extinction to a single asteroid impact, and the gradualist theory, which suggests a slow decline due to volcanic activity. Both theories agree on significant climate change as a factor. The extinction event also led to the rise of mammals and eventually humans.

What are the two main theories about the extinction of dinosaurs?

• Volcanism and Meteorism

• Natural Selection and Catastrophism

• Gradualism and Catastrophism

• Catastrophism and Evolutionism

What evidence supports the asteroid impact theory?

• Increased volcanic activity

• Rising sea levels

• Fossilized dinosaur bones

• Presence of iridium in the Earth's crust

What was one of the major consequences of the asteroid impact according to the catastrophist theory?

• Rise in global temperatures

• Creation of a massive tsunami

• Formation of new continents

• Increase in dinosaur population

How did volcanic activity contribute to the extinction of dinosaurs according to gradualists?

• By causing earthquakes

• By blocking sunlight with dust

• By increasing oxygen levels

• By creating new habitats

What was a significant outcome of the extinction event that affected 70% of Earth's species?

• The evolution of mammals

• The rise of reptiles

• The extinction of marine life

• The dominance of birds