It is thought that the first multicellular organisms arose about:
A) 1.2 billion years ago
B) 500 million years ago
C) Two billion years ago
D) 3.5 billion years ago
E) Six billion years ago
Correct Answer:
Verified
Q6: Photosynthesis probably originated during the _ eon
Q11: Clues from geology and paleontology suggest that
Q12: Ediacaran organisms lived during the:
A)Precambrian period
B)Cambrian period
C)Devonian
Q13: The "Cambrian explosion" refers to:
A)The mass extinction
Q14: Which scientist,using S-shaped curved open-necked flasks to
Q16: Which of the following is not a
Q17: It is thought that the first cells
Q18: Which theory is used to help explain
Q19: Which of the following did not occur
Q20: Stanley Miller's first prebiotic simulation experiment showed
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