The picture shows a model of a cell. What is the main function of the part labeled Zin the model?
A. To hold and protect the cell's DNA
O B. To use energy from sunlight to make sugars
C. To provide the cell with energy for its activities
D. To store food and other materials inside the cell

if you can attach the picture I can tell you the answer.

Explanation:

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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.