How does humus contribute to the acidity of soil?
A)The humus contains a large proportion of amino acids that get released into the soil.
B)The humus binds with hydroxide ions, which has the effect of increasing the hydronium ion concentration.
C)In decomposing, the humus releases carbon dioxide which reacts with moisture to form carbonic acid.
D)Humus contains many alkaloids that cause the pH of the soil to rise.

Question

Quizplus · Accepted Answer

In decomposing, the humus releases carbon dioxide which reacts with moisture to form carbonic acid. This contributes to the acidity of the soil.

How Does Humus Contribute to the Acidity of Soil