The video explains the formation of the Isthmus of Panama due to tectonic activity, which connected North and South America and facilitated significant animal migrations. It highlights how species like armadillos and llamas used this land bridge to expand their ranges. The video also discusses current threats to the Isthmus, such as rapid development and environmental challenges, which could disrupt migration routes.

What was a significant barrier for jaguars before the formation of the Isthmus of Panama?

• The fragmentation of their forest

• The presence of human hunters

• The lack of food resources

• The presence of other predators

How was the Isthmus of Panama formed?

• By glacial movements

• By volcanic eruptions

• By colliding tectonic plates

• By a meteor impact

Which animal species migrated from South America to North America using the Panama land bridge?

• Llamas

• Armadillos

• Elephants

• Kangaroos

What happened to llamas after they migrated south using the Isthmus?

• They were domesticated by humans

• They were likely killed off in the north by early human hunters

• They became extinct

• They thrived in the north

What is a major threat to the Isthmus of Panama today?

• Rising sea levels

• Rapid urban development

• Invasive species

• Increased volcanic activity

How does the narrowness of the Isthmus of Panama affect environmental challenges?

• It magnifies the impact of challenges

• It prevents challenges from occurring

• It reduces the impact of challenges

• It has no effect on challenges

What could happen if a swath of forest in the Isthmus is destroyed?

• It could increase biodiversity

• It could have no impact on migration

• It could cut off migration routes between north and south

• It could create new migration routes