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.
Good. There are six main types of disease causing agents or pathogens: prions, viruses, bacteria, protozoans, fungi, and macroparasites. These pathogens vary greatly in size and shape, and also in the type of diseases they cause in their host.Pathogens can be microscopic (too small to be seen with the unaided eye) or macroscopic (can be seen with the unaided eye).hese pathogens vary greatly in size and shape, and also in the type of diseases they cause in their host. Pathogens can be microscopic (too small to be seen with the unaided eye) or macroscopic (can be seen with the unaided eye).