Can you plz help me out

Explanation: 1 fixed volume because its a solid

2. not easily compressed because its a solid

3. Liquids take the shape of it's container

4. gases have no fixed volume

5. gases have low density

6.You cant really compress a gas or at least with your hands (I would put not easily compressed)

7. Particles in a gas are spread out and move freely

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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.