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Questions and Answers
What is the estimated number of Earth's current species?
What is the estimated number of Earth's current species?
- 5 billion
- 1,899,587
- 1 trillion
- 10 million to 14 million (correct)
How many species have been documented out of the estimated Earth's current species?
How many species have been documented out of the estimated Earth's current species?
- 17,000 per year
- 20,000,000
- 1.2 million (correct)
- 1 trillion
What method was used to count the emperor penguin population in 2012?
What method was used to count the emperor penguin population in 2012?
- Using the transect method
- By experts' estimates
- By census
- By satellite (correct)
What is the estimated number of marine microbial species alone?
What is the estimated number of marine microbial species alone?
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When did scientists report the estimated number of 1 trillion species on Earth?
When did scientists report the estimated number of 1 trillion species on Earth?
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