The answer would be: <span>secretes mucus that is not identical to stomach mucus
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Stomach cell lining is protected by a thick mucus that prevents the acid from destroying the epithelial cells. But the mucus that secreted by the esophagus is different than the stomach. That makes esophagus can't protect itself from the stomach acid.
Answer:
Speciation was allopatric or peripatric, but would depend on the number of individuals that dispersed from the original populations.
Explanation:
- There are two types of speciation: allopatric and peripatric.
- Allopatric speciation occurs when the species of same population gets isolated that results in lack of gene flow.
- From the isolated population, new species are formed then it is known as the peripatric speciation.
- All these isolation of populations and formation of new species depends upon the initial or original group of species that was dispersed.
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From what I know it fills the skin in more causing it to stretch taking the wrinkles away.
