I can tell you two of them they are!
answer: Bacteria or mold and fungi!!
10 harms of microorganisms
how are microorganisms harmful to the enviorment
Sanitization reduces the number of harmful microorganisms to a safe level, while sterilization eliminates all microorganisms, including harmful ones. Sterilization is more effective in completely eliminating harmful microorganisms compared to sanitization.
pathogens
Sanitization reduces the number of harmful microorganisms to a safe level, while sterilization eliminates all microorganisms. Sterilization is more effective in completely eliminating harmful microorganisms compared to sanitization.
Bacteria or mold
Sanitation involves cleaning to remove dirt and debris, disinfection kills most harmful microorganisms, and sterilization eliminates all microorganisms. Sterilization is the most effective in eliminating harmful microorganisms, followed by disinfection, and then sanitation.
fungus, bacteria (sometimes) and virus. :)
antibiodic
Hot water.
Microorganisms which spread diseases are harmful microorganisms.
Bacteria compete with other bacteria and microorganisms by secreting toxins and antibiotic proteins.