True or false? earth day is held on june

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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.

a chain link fence because there so tiny even my albino donkey can't get out

i think its both a and b

answer; hydrologic cycle;