THC is the active component in marijuana, and ethanol is the alcohol in alcoholic beverages. Explain briefly (1-2 sentence/s only) why drug screenings are able to detect the presence of THC but not ethanol weeks after these substances have been introduced into the body. CH3 он CH3CH2-OH ethanol CH3 ČH3 (CH2)4CH3 tetrahydrocannabinol THC

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