Explain how the body regulates the amount of thyroxine that is produced if the body is
not stressed or cold.

i think it's c

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explanation:

b r

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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.

and after water is usually warmed by the sun the water temperature raises and then evaporates .