A threat to the biodiversity is a result of plants and animals introduced to an ecosystem are invasive species.
The correct option is D.
What is an invasive species?
Invasive species are artificially introduced by human and that are causing harm to the environment.
These species becomes the competition for other organisms.
They do not have predators as they are new to the environment. Thus, their population increases.
Thus, the correct option is D, invasive species.
Learn more about invasive species, here:
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