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Author Question: As crop residue breaks down, it competes with a growing crop for soil ____; therefore, extra ____ ... (Read 173 times)

Redwolflake15

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on: Jul 21, 2018

As crop residue breaks down, it competes with a growing crop for soil ____; therefore, extra ____ may
  be needed to assure good crop yields.


 
 

a. hydrogen c. nitrogen
  b. carbon dioxide d. oxygen



Question 2

Of the cereal grains grown worldwide, the second-most-important crop is:
 
 

a. wheat c. corn
  b. barley d. rice



mochi09

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Reply #1 on: Jul 21, 2018
Answer to Question 1

C

Answer to Question 2

A


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