The sulfur dioxide in the atmosphere ________. A) can be an ...

[jman1234]

The sulfur dioxide in the atmosphere ________.
 
  A) can be an important source of sulfur nutrition for plants
  B) comes from fires such as fossil fuel burning, volcanoes and forest fires
  C) is a major contributor to acid rain
  D) all of the above
  E) none of the above

Question 2

Wetlands and forests growing along the banks of rivers remove much nitrogen from groundwater by the process of ________.
 
  A) denitrification
  B) ammonification
  C) nitrification
  D) immobilization
  E) none of the above

[aliotak]

Answer to Question 1

D

Answer to Question 2

A