What does this mean there nothing here
In alcohol, digestion is not necessary. Alcohol travels through the body mostly through absorption.
what is absorption ?
The molecules, atoms, and ions of the substance being absorbed enter the bulk phase (gas, liquid, or solid) of the medium in which it is taken up. Absorption is a physical or chemical phenomena. The process of becoming totally absorbed into another substance is known as absorption. A material absorbs energy and alters it during the process. The absorbent evenly disperses the substance it absorbs across the surface. Absorption is the general term for actions involving liquids and gases that enter the body of an absorbent.
To know more about absorption
brainly.com/question/26061959
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I'm not sure which barriers??.
