Why can it be harmful to the environment to introduce a new plant into a place?

Introducing a new plant species to an environment can disrupt local ecosystems by outcompeting native plants for resources, leading to a decline in biodiversity. These invasive species may alter soil chemistry, water availability, and habitat structure, which can negatively affect local wildlife. Additionally, they can introduce diseases that native species are not equipped to handle, further threatening biodiversity and ecosystem stability. Overall, such introductions can have long-lasting and often irreversible impacts on the environment.