Invasive species often unbalanced the ecosystem into which they are introduced because

Invasive species are those species that are non native to a given ecosystem of concern and also whose introduction causes or is likely to cause economic or environment harm or harm to the organisms in the ecosystem. They are considered as the second most threat to biodiversity, after habitat loss.

SOURCE FROM: ITSELFFF

it marks things for degradation via the proteasome. it alters there celluar location.