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naturally occuring- formed as a result of natural processes

inorganic- not formed from once living things

solid- have a definite volume and shape

crystal structure- particles lined up in a repeating pattern

definite chemical composition- contains certain chemical elements in particular proportions

Explanation:

Inorganic > not formed from living or once living things.

Definite Chemical Composition > having a definite shape and volume.

Naturally Occurring > contains certain chemical elements in particular proportions.

Solid > formed as a result of natural processes in or on Earth.

Crystal Structure > particles line up in a repeating pattern.

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.

the glands which are associated with each description is given below: