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Author Question: Together, three natural elements make up 99 of the Earth's biomass. Which of the following is not ... (Read 52 times)

segrsyd

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Together, three natural elements make up 99 of the Earth's biomass. Which of the following is not one of those three elements?
 
  A) oxygen (O)
  B) hydrogen (H)
  C) nitrogen (N)
  D) carbon (C)

Question 2

In the soil, which of the separates are associated with significant chemical activity?
 
  A) Sand
  B) Silt
  C) Clay
  D) Aluminum
  E) Radium



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chereeb

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Answer to Question 1

C

Answer to Question 2

Answer: C




segrsyd

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Reply 2 on: Jul 14, 2018
Excellent


diana chang

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Reply 3 on: Yesterday
Gracias!

 

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