Before using any chemical in the lab, why should one first read the material safety data sheet (msds)?

this is important for laboratory safety.
the msds tells where to purchase chemicals.
the msds provides the chemical formulas.
this is important for analyzing experiments.

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

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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.

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