Organic material provides nitrogen for plants. Which soil component contributes the most nitrogen to plants? clay
humus
sand
silt

The soil component which contributes most nitrogen to plants is humus.

Soil is defined as the topmost layer of the earth crust which provides support and nutrients for plants.

There are different types of soil:

The soil organic materials are being transformed into humus which feeds all the organisms that lives in the soil. It gives the the soil a very healthy life. In order words, humus soil allows organisms in the soil to feed and reproduce.

Learn more about soil:

link

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;