If we ignore all ifs & buts, then the exact temperature for melting of snow/ice is 0.01 degree C or 32.02 degree F. While answering this, we should also remember that water has a triple point at this temperature, i.e., it can exist in all the three forms - solid, liquid and gas.
Infectious diseases are caused by microorganisms such as viruses, bacteria, fungi or parasites and can spread between individuals. 1  Infectious diseases are caused by microorganisms such as viruses, bacteria, fungi or parasites. 2  Microorganisms that cause disease are collectively called pathogens.
Infectious Diseases. Among the almost infinite varieties of. microorganisms, relatively few cause disease in. otherwise healthy individuals. Microorganisms that cause disease are known as. pathogens. Infectious disease results from the interplay. between those few pathogens and the defenses. of the hosts they infect. The appearance and severity of disease resulting. from any pathogen depends upon the ability of.