What are invasive species?

Invasive species are identified as non-native plants or animals that, when introduced to a new environment, can disrupt local ecosystems. These species often have the ability to thrive and reproduce quickly in their new habitats, outcompeting native species for resources such as food, space, and light. This disruption can lead to significant ecological changes, such as the decline of native species, alteration of habitat structure, and changes in nutrient cycling.

This choice highlights the essential characteristics of invasive species, which include their non-native status and their potential to negatively impact existing ecosystems. By being introduced, whether intentionally or accidentally, these species can alter the balance of the local flora and fauna, often leading to the displacement of indigenous species that are crucial for maintaining the ecosystem's health and stability.

The other options do not accurately describe invasive species. Native plants, for instance, are essential for supporting local ecosystems rather than disrupting them. Species bred for agriculture are typically developed for production purposes and are generally managed within controlled environments, rather than being a threat to natural ecosystems. Similarly, animals raised for food do not fit the definition of invasive species as they are domesticated and usually kept under human supervision.