This is also due today! Please help :(

For the cardboard column the 4 u DIDNT answer in order r Y Y N N

And for the Topaz column the ones in order that u DIDN'T answer are N Y Y

Explanation:

Cardboard is a solid and is inorganic but not naturally occurring or a mineral.

Topaz is not inorganic but is naturally occurring is a crystalline structure and is a mineral

hey, what do you need . just post the question and i may be able to you : )

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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.