All but one of the factors may cause an animal species to be placed on the endangered list. The factor that does not directly contribute to the endangered status is
Responses
A pollution from human sources.pollution from human sources.
B habitat loss because of city construction.habitat loss because of city construction.
C introduction of non-native animals to the range of the animal.introduction of non-native animals to the range of the animal.
D introduction of the animal into places that it has previously gone extinct.