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Author Question: The approximate size of an atom is a. 10-6 m. b. 10-8 m. c. 10-10 m. d. 10-12 m. e. 10-14 ... (Read 39 times)

EY67

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The approximate size of an atom is
 
  a. 10-6 m.
  b. 10-8 m.
  c. 10-10 m.
  d. 10-12 m.
  e. 10-14 m.

Question 2

Nitrogen fixation and runoff of nitrogen applied to the soil pose problems for agricultural production and the environment. Why is this so? Explain.
 
  What will be an ideal response?



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Swizqar

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Answer to Question 1

C

Answer to Question 2

The soils that are overfertilized become depleted in nutrients and less fertile,
demanding more fertilizer. Also, runoff brings the applied chemicals into groundwater and
streams, where it can be ingested by humans. The phosphorus and nitrogen compounds
have been shown to have effects in humans in large quantities, and it is not known what
effects of exposure to small concentrations will be.





 

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