How do invasive species threaten biodiversity? a. They create new habitats for native species. b. They compete with native species for resources. c. They increase the overall population of all species.

Invasive species pose a significant threat to biodiversity primarily because they compete with native species for limited resources like food, water, and shelter. When they establish themselves in a new environment, they can outcompete native species that have evolved over long periods, leading to declines or even extinctions. This disruption can alter entire ecosystems and affect the services they provide. They often introduce diseases that native populations have no immunity against, further threatening their survival. A classic case is the introduction of the European rabbit in Australia, which led to the decline of native fauna and significant ecological damage. Understanding these dynamics is vital for conservation efforts!