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Questions and Answers
When did Earth form?
How many species have been named and documented in a central database?
Where were the earliest evidence of life discovered?
When were possible 'remains of biotic life' found in rocks?
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What percentage of currently living species represent all species that have ever lived on Earth?
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Study Notes
Formation of Earth
- Earth formed approximately 4.54 billion years ago
Biodiversity
- Over 1.8 million species have been named and documented in a central database
Earliest Evidence of Life
- The earliest evidence of life was discovered in Western Australia, specifically in the fossilized stromatolites of the Strelley Pool Formation, which date back to around 3.46 billion years ago
Evidence of Ancient Life
- Possible 'remains of biotic life' were found in rocks dating back to around 3.5 billion years ago
Species Extinction
- Only about 1% of all species that have ever lived on Earth are currently alive, implying that around 99% of species that have ever lived on Earth are now extinct
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Description
Test your knowledge of the history of life on Earth with this quiz. Explore the processes of evolution, from the earliest emergence of life to the present day. Delve into the evidence of life dating back billions of years and uncover the controversies surrounding early life forms.
