Clues from geology and paleontology suggest that simple cells or their precursors arose about:
A) Six billion years ago
B) Six million years ago
C) Four billion years ago
D) Four million years ago
E) One million years ago
Correct Answer:
Verified
Q6: Photosynthesis probably originated during the _ eon
Q6: The last shared ancestor for today's cell
Q7: Which scientist is given credit for proposing
Q8: It is thought that eukaryotes probably originated
Q9: Which of the following were found in
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
Q15: It is thought that the first multicellular
Q16: Which of the following is not a
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