Three models are proposed to explain the Cretaceous-Paleogene (K-Pg) extinction event. Match each proposed mechanism of extinction to the model that features it based on the descriptions below:
* Model 1 (Asteroid Impact): Proposes that a massive asteroid collision injected dust and sulfur into the atmosphere, causing immediate, widespread cooling and blocking sunlight.
* Model 2 (Deccan Traps Volcanism): Proposes that massive volcanic eruptions released large volumes of carbon dioxide () over hundreds of thousands of years, causing gradual greenhouse warming and ocean acidification.
* Model 3 (Marine Regression): Proposes that a drop in global sea levels drained shallow interior seaways, destroying coastal habitats and gradually reducing species diversity before the final extinction.
- Extinction is primarily driven by sudden global cooling and lack of sunlight due to atmospheric debris.Model 1 (Asteroid Impact)
- Extinction is primarily driven by long-term climate changes and habitat loss due to falling sea levels.Model 3 (Marine Regression)
- Extinction is primarily driven by gradual global warming and ocean acidification from greenhouse gas emissions.Model 2 (Deccan Traps Volcanism)