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Although the size of pixels differs greatly, 300 micrometres is about the average. Pixels contain three subpixels that are red, green, and blue. Pixels are pretty cool, but voxels are even better. They are three-dimensional pixels.

Amoeba are unicellular, which means there is only one cell. Some amoebae can grow to an incredible 700 micrometres, which is almost an entire millimetre.