How to Use "humus" with Example Sentences

1. Wind and spring floods erode soils , exposing underlying layers and premiering new compositions of humus and minerals on the surface .

2. Soil microorganism plays an important role in the process of nutrient transformation and humus forming in soil .

3. Soil which contains a lot of humus is more fertile than that which only has a little .

4. So the topsoil is bits of rock mixed with things that are once alive . These things in the topsoil that were once alive are called humus .

5. Plants grow in soil which has a dark colour . This dark soil is humus .