How does invasion species upset stability of ecosystem

This is relatively easy for me to answer from my own knowledge: Invasive species disturb environments by increasing competition and destroying the peace in the ecosystem.

Copied answer

The invasive species are the species who are present in a non native ecosystem. The invasion of These species disturbs the environment of particular system by increasing the competition or destroying the vital component of the ecosystem.

(yes I did copy some words from online sources, but if you want to make your answer seem like it wasn't copy paste, I suggest you use my answer)

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explanation:

i think

it would lead to upper respiratory infections and pneumonia.