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Questions and Answers
What is the estimated number of species that Earth may have?
What is the estimated number of species that Earth may have?
- 500 billion species
- 1 trillion species (correct)
- 10 trillion species
- 100 billion species
Where were possible 'remains of biotic life' found in 2015?
Where were possible 'remains of biotic life' found in 2015?
- Antarctica
- Sahara Desert
- Western Australia (correct)
- Greenland
When did Earth form?
When did Earth form?
- 2.8 billion years ago
- 4.5 billion years ago (correct)
- 3.7 billion years ago
- 5.2 billion years ago
What is the percentage of currently living species representing all species that have ever lived on Earth?
What is the percentage of currently living species representing all species that have ever lived on Earth?
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Where is the earliest evidence of life found?
Where is the earliest evidence of life found?
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