Select all that apply. pathogens include:
protozoa
viruses
algae
fungi
bacteria
parasites

The correct answer is- Protozoa, Viruses, Algae, Fungi, Bacteria.

Pathogens can be described as disease causing agents ( also called infectious biological agents) that cause illness as they invade host organism.

Example of pathogens-

virus ( such as human pappilomavirus that causes cerival cancer),

bacteria ( such as Salmonella typhimurium that causes typhoid) ,

protozoa ( such as Entamoeba histolytica causing amebiasis),

fungi ( such as Candida species causing fungal infection) ,

algae ( that can produce algal blooms, which releases harmful toxins).    

maritime tropical may be your answer.