ocr: PROTISTS P celled ROTISTS - are organisms a large that group live in of one- fresh- Others, because such they as contain amoebas, chlorophyll. feed on water, seawater, and other damp other protists, bacteria, or rotting habitats. Seaweeds are also classified plant and animal material. Some as protists, even though they are protists are harmful parasites and multicellular (made up ofmany cells). cause diseases in humans and other Some protists feed themselves by animals. For example, the protist photosynthesis, as plants do, Plasmodium causes malaria. Green protist Euglena lives in ponds ort mu ...