Fungus-like protists
Protists which break down organic material are known as fungus-like protists. A few examples of this type of protist are water molds and slime molds.
protozoans
Chemoautotrophs are organisms that break down inorganic molecules to supply energy.
Decomposers
They break down a lot of fresh organic material into compost, or rich soil.
Fungi
Sea decomposers break down organic material in the ocean. These sea decomposers include crabs, sea urchins, shrimp, and seaweed.
Fungi and Bacteria are the most important decomposers in a grass land . They break down dead organic material .
Saprotrophs are organisms that break down dead organic material to inorganic products, important in recycling of nutrients in ecosystems. Detritivores such as woodlice and earthworms are saprotrophic organisms that ingest dead organic material and break it down during digestion by enzymes to smaller particle size. Some of the digested particles are not absorbed but eliminated onto the soil where they form humus. Fungi and bacteria are saprotrophic organisms called decomposers. They further breakdown organic material in the humus by secreting enzymes externally then absorbing the digested material. Mineral nutrients such as ammonia are released to the soil at this stage. The detritivores increase the surface area of the dead organic material making it easier for the decomposers to break it down completely to inorganic molecules.
Less, because humus is composed of organic material that's at it's break down point, so the deeper you dig the less organic materials there is
Material formed from nonliving matter is soil. Organic dead debris and nonliving debris will break down either naturally or with the help of nature to form new soil.
The organic material in garbage start to decompose (rot) under the activity of fungi and bacteria (decomposes) and this causes the organic material to break down into its chemical components. Some of these components are volatile and and have a strong smell (Ammonia and Hydrogen Sulfide) causing the garbage to smell bad.