Podcast
Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App
Questions and Answers
Approximately how long ago did Earth form?
Approximately how long ago did Earth form?
- 4.1 to 4.28 Ga
- 1 trillion years ago
- 3.7 Ga
- 4.5 billion years ago (correct)
When did evidence suggest that life emerged on Earth?
When did evidence suggest that life emerged on Earth?
- 4.1 to 4.28 Ga
- 3.7 Ga (correct)
- 1 trillion years ago
- 4.5 billion years ago
How many species have been identified on Earth?
How many species have been identified on Earth?
- 1 trillion
- 1.75–1.8 million (correct)
- 4.5 billion
- 1.8 million
What percentage of currently living species represent all species that have ever lived on Earth?
What percentage of currently living species represent all species that have ever lived on Earth?
Signup and view all the answers
What is the earliest evidence of life based on?
What is the earliest evidence of life based on?
Signup and view all the answers
Which of the following is true about the emergence of life on Earth?
Which of the following is true about the emergence of life on Earth?
Signup and view all the answers
What is the estimated number of species that may exist on Earth?
What is the estimated number of species that may exist on Earth?
Signup and view all the answers
What percentage of all species that have ever lived on Earth are currently living?
What percentage of all species that have ever lived on Earth are currently living?
Signup and view all the answers
What is the approximate age of Earth?
What is the approximate age of Earth?
Signup and view all the answers
What is the earliest evidence of life based on?
What is the earliest evidence of life based on?
Signup and view all the answers
Flashcards are hidden until you start studying
