THE PROTISTA KINGDOM
Protists include two very different types of organisms: algae and protozoa.
ALGAE
Algae are aquatic living things that can be unicellular or multicellular. They can make their own food (autotrophs). Some multicellular marine algae can grow to a very large size.
Algae are very nutritious, so they are used as food in many countries. They are also used as fertilizer and to produce cosmetics.
PROTOZOA
Protozoa are unicellular living things that live in aquatic environments. They feed on other organisms. Somo protozoa can cause diseases, like malaria.
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