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.
Leptospirosis, also called Weil's disease, is a bacteria that many rats carry without showing symptoms of infection. Humans become infected when contaminated rat urine or feces comes in contact with mucous membranes. Symptoms in people include headache, fever, vomiting, rash and muscle aches.
Tularemia is a plague-like disease caused by the Gram-negative bacterium Francisella tularensis. The organism is transferred to man from animals (i.e., a zoonosis) such as rodents, voles, mice, squirrels, and rabbits. Reflecting the natural origin of the disease, tularemia is also known as rabbit fever.