Which of the following microorganisms can be used as pesticides?

🔑Key Points:
-Microorganisms can indeed be used as biopesticides.
-They are typically specific to their target pests and are environmentally friendly. 

✏️some examples are:
-Bacteria: Certain strains of bacteria, such as Bacillus thuringiensis (Bt), are commonly used in microbial pesticides.
-Fungi: Some fungi can control certain weeds and other fungi that kill specific insects.
-Viruses: Certain viruses are also used as biopesticides.
-Protozoa: Some protozoa can act against specific plant pests.
-These microorganisms control pests by causing disease, creating competition for food and space, producing toxic metabolites, or various other modes of action.