Aerobic organisms first started building up oxygen in the Earth's atmosphere around
A) 4.6 billion years ago
B) 3.5 billion years ago
C) 4.0 billion years ago
D) 2.5 billion years ago
Correct Answer:
Verified
Q73: What is one piece of evidence that
Q74: The first eukarya appeared
A) 4.6 billion years
Q75: Today, which organisms have the highest biomass?
A)
Q76: What do we mean by "The Oxygen
Q77: The Cambrian Explosion began approximately
A) 2.1 billion
Q79: Why do we believe the Cambrian explosion
Q80: What is one piece of evidence that
Q81: Once oxygen started to be manufactured by
Q82: The concentration of oxygen in the atmosphere
Q83: The most well-known impact crater in North
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents