Mass Extinctions and Species Survival

What dual role do mass extinctions play in nature?

• They only affect plant species.

• They prevent any form of life from evolving.

• They act as a reset button and trigger new life.

• They only destroy life without any positive effects.

What are the 'Big Five' mass extinctions known for?

• Dramatically appearing in the fossil record.

• Being the least significant events in Earth's history.

• Having no impact on species diversity.

• Causing minor changes in the ecosystem.

Which of the following was a cause of the 'Big Five' mass extinctions?

• Increased human activity.

• Small meteor showers.

• Gradual climate stability.

• Massive volcanic eruptions.

What significant event followed the extinction of dinosaurs?

• The extinction of all bird species.

• The diversification of terror birds.

• The dominance of aquatic life forms.

• The rise of large carnivorous mammals.

How long did it take for life to start making a comeback after a mass extinction?

• A few decades.

• Tens of millions of years.

• A few centuries.

• A few years.

What is a key factor for species survival during mass extinctions?

• Being geographically widespread.

• Having a large body size.

• Being a carnivore.

• Living in isolated areas.

What does having 'evolutionary eggs in many different geographical baskets' imply?

• Species should focus on one habitat.

• Species should diversify their habitats.

• Species should avoid geographical spread.

• Species should only inhabit tropical regions.

What is a potential outcome for humans in future mass extinctions?

• Complete extinction of humans.

• Humans will survive due to their global spread.

• Humans will become the only species on Earth.

• Humans will only survive in tropical areas.

Why is understanding past mass extinctions important for humans today?

• To predict and adapt to future ecological changes.

• To ensure the extinction of all other species.

• To focus solely on technological advancements.

• To prevent any form of life from evolving.

What is a major concern regarding the future of humans and other species?

• The dominance of aquatic life forms.

• The quality of life and survival of other species.

• The complete isolation of human populations.

• The extinction of all plant species.