Tundra.
No, they do not. Plants contribute most of the organic remains that form humus.
Organic matter breaks down (decays) to form humus.
Provide most of the organic matter that gets broken down to form humus.
breakdown of organic remains
organic matter and humus are related because they are darker in a way. and many leaves that fall from forest trees every autumn help form humus. the decaying leaves and plentiful rainfall form thick fertile soil.
Humus
Because humus is dead stuff decomposed. It gives lots of nutrients to plants who need them. So, the forest floor has lots of dead stuff right? There is probably lots of banana slugs and worms cause they don't need sunlight anyways back to the subject these decomposers decompose and mixes all the dead stuff with the soil and WALLAH there is humus!
unscramble the word streeds and thats ur answer
Both. In breaking down into humus, both chemical and physical change takes place.
"Humus is in soil," "the humus levels were high," Did I answer your Question?
Humus forms through the decomposition of organic matter by microorganisms in the soil. It is a stable and dark organic material that improves soil structure, retains water, and provides nutrients for plants. The process of humus formation is a slow one, taking several years to decades.