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Author Question: What percentage of water on the earth is seawater, and hence, unfit for drinking? A) 2 B) 25 C) ... (Read 28 times)

karlynnae

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on: Aug 27, 2018
What percentage of water on the earth is seawater, and hence, unfit for drinking?
 
  A) 2
  B) 25
  C) 45
  D) 98

Question 2

Compounds related to the heterocyclics pyrimidine and purine are constituents of
 
  A) amino acids.
  B) nucleic acids.
  C) proteins.
  D) plastics.


tsternbergh47

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

B


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