1) which three species change colour the closest to sept. 1st
2) which three species change colour the latest in the fall?
3) 2016 has earlier or later dates for colour change than 2017?
b) what do you think caused the number of days to change from one year to the next? explain your thinking and form a hypothesis.
idk how to do this

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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.