Crash Course Biology: Biodiversity and Conservation

The video explores biodiversity using a Jenga tower analogy, highlighting the impact of human activities on species extinction. It introduces conservation biology, emphasizing the importance of preserving ecosystems and genetic diversity. The video discusses environmental injustices and showcases the Green Belt Movement led by Wangari Maathai. Various conservation strategies are explored, including restoration ecology and wildlife corridors. A case study on the reintroduction of wolves in Yellowstone illustrates the complexity of ecosystem restoration. The video concludes with a preview of the next topic: evolution.

What analogy is used to describe the biosphere in the video?

• A house of cards

• A Jenga tower

• A puzzle

• A chessboard

What is the primary cause of the potential sixth mass extinction?

• Wobbly tables

• Asteroid impacts

• Volcanic eruptions

• Human activities

What does conservation biology aim to preserve?

• Only ecosystems

• Biodiversity in all its forms

• Only endangered species

• Only genetic diversity

How do invasive species affect local ecosystems?

• They improve biodiversity

• They help native species thrive

• They outcompete or prey on local species

• They have no impact

What is an example of an environmental injustice mentioned in the video?

• Desertification in the Sahara

• Overfishing in the Pacific

• Deforestation in the Amazon

• Pollution in Cancer Alley

Who founded the Green Belt Movement?

• Jane Goodall

• Rachel Carson

• Wangari Maathai

• David Attenborough

What is the purpose of wildlife corridors?

• To isolate animal populations

• To connect fragmented habitats

• To prevent animal migration

• To increase human access to wildlife

What was the impact of reintroducing wolves to Yellowstone?

• It helped restore ecological balance

• It caused more species to go extinct

• It led to increased human-wolf conflicts

• It had no effect

What is a biodiversity hotspot?

• A region with extreme weather conditions

• A region with low species diversity

• A region with no human activity

• A region with a high concentration of unique species

What is the role of restoration ecology?

• To create new ecosystems

• To increase genetic diversity

• To eliminate invasive species

• To return habitats to their previous state