Provide two ways to modify soil pH, one to increase it and one to ...

[cool]

Provide two ways to modify soil pH, one to increase it and one to decrease it.
 
  What will be an ideal response?

Question 2

What plant constituents have nitrogen as part of their structure?
 
  What will be an ideal response?

[irishcancer18]

Answer to Question 1

 To raise the soil pH, agricultural limestone (contains calcium) or dolomitic
limestone (contains calcium and magnesium) are used.
 To lower the pH, sulfur-containing compounds are used.

Answer to Question 2

Nitrogen is found in chlorophyll, amino acids, proteins, and nucleic acids.

[cool]

Thanks for the timely response, appreciate it

[kusterl]

Great answer, keep it coming