this is kinda vague, but here are some guesses: peat moss, mulch, or a cow pie.
[http://en.wikipedia.org/wiki/Peat Peat].
Peat is a soft brown material made up of partially decayed plants like sphagnum moss, reeds, and grasses. It is usually found in wetland areas and is commonly used as a soil conditioner or fuel source.
They are made of biodegradable material like plants.
No clay is not an organic material, it is made from minerals.
coal
A brown flexible solid could be leather, a material made from tanned animal hides that is known for its durability and flexibility.
This watch features a brown band made of Bezel material.
The main difference between brown and white coffee filters is the material they are made of. Brown filters are typically made from unbleached paper, while white filters are made from bleached paper. This difference in material can affect the taste of the coffee, as some people believe that unbleached filters can impart a slight paper taste to the coffee.
Yes, mulch is often a soft brown material composed of partly decayed plant materials, such as leaves, bark, or wood chips. It serves to retain moisture in the soil, suppress weeds, and improve soil quality as it breaks down further over time. Mulch can also be made from other organic materials, including straw or grass clippings, and comes in various colors and textures.
the cell wall is made of plastic the cell wall is made of plastic The cell wall is not made of plastic, but it is made of a nonliving material.
Organic material in soil includes decomposed plant and animal matter such as leaves, roots, and manure. This organic material provides nutrients for plants, improves soil structure, and supports beneficial soil organisms.
The main difference between brown and white coffee filters is the material they are made of. Brown filters are typically made from unbleached paper, while white filters are made from bleached paper. This difference in material can affect the taste of the coffee, as some people believe that unbleached filters can impart a slight paper taste to the coffee. Additionally, brown filters are considered more environmentally friendly as they do not go through the bleaching process.