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Questions and Answers
What is the current annual rate of species extinction compared to the estimated background extinction rate?
What is the current annual rate of species extinction compared to the estimated background extinction rate?
- 100 to 1,000 times higher (correct)
- 10 to 100 times higher
- Equal to the estimated background extinction rate
- 1,000 to 10,000 times higher
When did the Holocene Extinction occur?
When did the Holocene Extinction occur?
- 11,700 years ago to present (correct)
- 200,000 years ago
- 1759
- 1 million years ago
What caused the extinction of the Thylacine?
What caused the extinction of the Thylacine?
- Natural causes
- Habitat destruction
- Relentless hunting and culling (correct)
- Climate change
What is the main reason for the listing of 40% of endangered species in the United States?
What is the main reason for the listing of 40% of endangered species in the United States?
Which species has the potential to wipe out as much as 90% of native ant populations?
Which species has the potential to wipe out as much as 90% of native ant populations?
What is an effective way to reduce threats from invasive species?
What is an effective way to reduce threats from invasive species?
What has driven at least one species to complete extinction?
What has driven at least one species to complete extinction?
What does HIPPCO stand for in the context of species conservation?
What does HIPPCO stand for in the context of species conservation?
What is the single greatest threat to species according to the text?
What is the single greatest threat to species according to the text?
What ecosystem service do various plant species provide according to the text?
What ecosystem service do various plant species provide according to the text?
What do nonnative tree species contribute to according to the text?
What do nonnative tree species contribute to according to the text?
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