Answer choice b, or federalism, is a system that was established in our constitution that ensures that political power is divided between the national government and state government.
Federalism is the system of government in which sovereignty is constitutionally divided between a central governing authority and constituent political units.
Introducing invaseive(nonnative) species to a city can be the downfall of that city because with no native hunters in the area the species can reak havic and soon the city will be overun with the species. This disrupts the natural ecosystem and soon the ecosystem will be failing. (sorry if its incorrect this is what makes senece to me)
