Copepod, (subclass Copepoda), any member of the widely distributed crustacean subclass Copepoda. Copepods are of great ecological importance, providing food for many species of fish. Most of the 13,000 known species are free-living marine forms, occurring throughout the world's oceans.
C they will adapt and eventually become a new species
Neck length is what is going to change so that is the Independent Variable. The Dependent Variable is the Survival Rate.
Hope this helps
