How is the Protozoa euglena useful to humans ?
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Protozoa are unicellular animals. Some are free - living, other are parasites. Several parasites Protozoans cause disease in human beings.
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- They do breathe, move, and reproduce like multi-celled animals.
- They live in water or at least where it is damp.
- Some protozoans are harmful to man because they can cause serious diseases.
- Others are helpful because they eat harmful bacteria and are food for fish and other animals.
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