Yellowstone Ecosystem and Wolf Reintroduction

The video discusses the decline of wilderness due to human activity and its consequences on global stability and biodiversity. It highlights the case of Yellowstone, where the removal of wolves led to ecosystem imbalance. The reintroduction of wolves restored ecological balance, demonstrating a positive human impact. The video emphasizes the importance of maintaining complete ecosystems for biodiversity and climate benefits, showing that biodiversity loss can be reversed with human intervention.

What has been the global consequence of turning natural wildernesses into tamed landscapes?

• Increased biodiversity

• A more stable world

• A less stable world

• Improved support for all species

What event in 1926 significantly affected Yellowstone's ecosystem?

• Introduction of new plant species

• Introduction of new predators

• Wiping out of the last wolf pack

• Flooding of the park

What was the initial reaction of wolves when reintroduced to Yellowstone?

• They struggled to adapt

• They immediately started hunting and forming packs

• They avoided forming packs

• They left the area

What was one of the first ecological changes observed after the wolves' return?

• Berry bushes grew back

• Rivers dried up

• Decrease in bear population

• Increase in elk numbers

How did the reintroduction of wolves affect the riverbanks in Yellowstone?

• They eroded rapidly

• They flooded

• They sprouted saplings like aspen and willow

• They became barren

Which animal populations benefited from the returning vegetation in Yellowstone?

• Kangaroos

• Lions

• Moose

• Penguins

What mistake does the narrator believe should be corrected regarding ecosystems?

• Introducing more predators

• Removing wolves

• Building more dams

• Planting more trees

How does a healthy ecosystem contribute to climate change mitigation?

• By reducing rainfall

• By reducing plant growth

• By capturing more carbon from the air

• By increasing temperatures

What is the narrator reminded of every time they visit Yellowstone?

• The irreversible loss of biodiversity

• The potential to reverse biodiversity loss

• The slow pace of ecological change

• The dangers of human intervention

What is an example of a positive human impact on the environment mentioned in the video?

• Deforestation

• Industrialization

• Urbanization

• Yellowstone wolf reintroduction