Amoebas, like all protists, are single-celled organisms. Cells are the building blocks for all life forms. "Single-celled" means that amoebas have only one cell for their entire body. A human body has more cells than you can count.they move with they're flagella. They live in fresh water
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Euglena are interesting because they are a sort of combination of plant and animal. They can make their own food like a plant, but they can also eat other things, like an animal. They can also swim and move. Scientists argued for years about which Kingdom to put them in, Animal or Plant? Right now they are in neither; most scientists put them in the Protist Kingdom with other microscopic organisms, such as amoeba and paramecium.