How do invasive species typically affect local ecosystems?

Invasive species typically outcompete native species for resources, which is why this answer is correct. When invasive species are introduced to a new environment, they often lack natural predators or controls that would normally limit their population in their native habitats. This allows them to thrive and expand rapidly, often consuming resources such as food, water, and space that are also necessary for native species' survival.

As invasive species become established, they can exert immense competitive pressure on native species, leading to declines in the populations of those native species. This competition can disrupt local ecosystems, alter habitat structures, and affect food webs as the balance of species interactions changes. Ultimately, invasive species can lead to decreased biodiversity, as native species may be pushed to extinction or forced into smaller, less viable populations.

The other options don't align with the typical impacts of invasive species. For instance, enhancing biodiversity or creating new habitats for native species would imply a supportive role, which is rarely the case with invasives. Additionally, claiming that they have no effect on native species ignores the well-documented ecological consequences that often arise when invasive species are present.