Organic material provides nitrogen for plants. Which soil component contributes the most nitrogen to plants?

A. clay
B. humus
C. sand
D. silt



Answer :

Final answer:

Humus, the organic component of soil, provides plants with essential nitrogen for growth through soil bacteria.


Explanation:

Humus is the soil component that contributes the most nitrogen to plants. Humus, as the organic component of soil, is a rich source of bioavailable nitrogen, essential for plant growth. This nitrogen is made accessible through special soil bacteria.


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