Making the world better, one answer at a time. Rich soil is made up of sand, silt, clay and organic matter (compost) in various stages of decomposition. Humus is the stable remains of decayed organic matter, carbon remains of unknown sorts that attach themselves to clay to improve soil structure. Humus has the ability to increase the soil's water retention, buffer PH , and helps the plant use nutrients although humus is not fertilizer but humic acids and humins.
Diseases carried by rats include, but are not limited too, the following: Bubonic plague â Rats are the primary source of plague infection in human populations. This horrific disease is spread to humans from rats by fleas. It's present in rodents throughout the western United States, and in many other parts of the world (see map).
Hantavirus disease is caused by several different strains of Hantaviruses. Hantaviruses are found in wild rodents in different parts of the world. Hantaviruses found in North America cause Hantavirus Pulmonary Syndrome which can cause severe lung problems.antavirus can be spread from wild rodents, particularly mice and rats, to people. The virus, which is found in rodent urine, saliva, and feces, can be easily aerosolized in confined spaces when disturbed by rodents or human activities, such as sweeping or vacuuming.