Not too long ago, archaebacteria and eubacteria belonged to the same kingdom, the kingdom Monera. Their appearance is similar; both have similar shapes, are unicellular, and have nuclei that are not surrounded by a membrane. Explain why you think biologists have decided to divide the kingdom into two.

maybe they are divided because they possess other distinguishing characteristics

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.