Answer:
Epidermis
Explanation:
The epidermis is the thin outer layer of the skin.
<span>The burners must be turned off because, in the case of liquid chromatography, the eluant solvents being used are flammable. Leaving the burners lit could cause the eluant to catch on fire, putting the scientist at risk.</span>
I believe you’re referring to the body’s fight or flight response.
Two things that Characterize the practice of science is empirical evidence and community consensus. Hope this helps.