Final answer:
Invasive species negatively impact ecosystems by outcompeting native species, changing the physical environment, and spreading diseases.
Step-by-step explanation:
Invasive species have a negative effect on ecosystems because they outcompete native species for resources, such as food and habitat. This can lead to a decrease in biodiversity and disrupt the balance of the ecosystem. Invasive species can also change the physical environment of an ecosystem by altering soil composition or water quality. For example, the introduction of zebra mussels in the Great Lakes has caused significant damage to native species and infrastructure. Additionally, invasive species can spread diseases to native species, further impacting the health of the ecosystem.
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