FORESTRY
SOIL SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
sand
|
|
|
glass
|
|
|
clay
|
|
|
decayed plants and animals
|
Detailed explanation-1: -In addition to the plant material in leaf litter, humus is composed of decaying animals, such as insects, and other organisms, such as mushrooms. Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up.
Detailed explanation-2: -Humus is the layer formed on soil due to the decomposition of dead plants and animals by microbes. Humus supplies nutrients to the soil. The properties of humus in the upper layer of good fertile soil is about 33% to 50%.
Detailed explanation-3: -As a result, humus plays a key role within ecosystems by providing essential nutrients derived from decayed organic litter and is, therefore, a central element in nutrient cycling in terrestrial systems. Due to its beneficial properties and nitrogen content, humus is vital for agricultural practices.