I think that the worse the quality of the water is the more negative effects it is going to have on the salamanders and the better the quality of the water is the more positive effects it is going to have on the salamanders because the in other study’s the more polluted a body of water was the more defects animals had that used that body of water
C. esophagus. it does not secrete any enzymes. its just do peristalsis. which is a rhythmic contractions and relaxations of muscles to push food along the gut
Genetic drift I believe because it means <span>variation in the relative frequency of different genotypes in a
small population, owing to the chance disappearance of particular genes
as individuals die or do not reproduce.</span>