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Daddy667 Daddy667
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Posts: 479
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6 years ago
An abundance of _____ in the atmosphere would have prevented the spontaneous assembly of organic compounds on early Earth.
 
  a. hydrogen
  b. methane
  c. oxygen
  d. nitrogen

Question 2

In cladograms, sister groups are _____.
 
  a. inbred
  b. the same age
  c. represented by nodes
  d. in the same family
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wrote...
6 years ago
Answer to q. 1

C

Answer to q. 2

B
Daddy667 Author
wrote...
6 years ago
Such an awesome helper!
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