I really need the answer to both of these. If you answer first I’ll give Brainliest

1) carbohydrates

2)protein or nucleic acid

Explanation:

1)carbohydrates(CHO)are made of carbon, hydrogen, and oxygen

2)it's either protein or nucleic acid I'm not sure which one though sorry. Protein contains all 4 of those elements but contains sulphur, and nucleic acid also contains those elements with phosphorus.

1). Carbohydrates

2). Protein

I hope this helped ;)

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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.