Give an example of a nonnative species that was introduced into an ecosystem that had a negative impact on the indigenous (native) species and describe what happened.

The Gypsy Moth, Nutria, Zebra Mussel, Hydrilla, Sea Lamprey and Kudzu are examples of non-natives that have caused massive economic and ecological losses in new locations because the natural controls of their native ecosystems were not there.

Non-native species can provide services useful to humans, particularly in facilitating many contemporary needs of ... For example, D. polymorpha has both numerous negative and positive effects on natural ecosystems.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.