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  2. Invasive Species - National Geographic Society

    education.nationalgeographic.org/resource/invasive-species

    An invasive species is an organism that is not indigenous, or native, to a particular area. Invasive species can cause great economic and environmental harm to the new area. Not all non-native species are invasive.

  3. Invasive Species - National Geographic Society

    education.nationalgeographic.org/resource/resource-library-invasive-species

    An invasive species is an organism that is not native to an ecosystem, and thus has no natural predators in that environment. This lack of predators often causes some wicked problems in the place it colonizes.

  4. People and Invasive Species - National Geographic Society

    education.nationalgeographic.org/resource/people-and-invasive-species

    An invasive species is commonly defined as any living organism not native to an area that causes economic or environmental harm, or is damaging to human health. It is worth noting that not all introduced species are invasive. In fact, they can sometimes be beneficial.

  5. Keystone Species - Education

    education.nationalgeographic.org/resource/keystone-species

    The keystone species could be a huge predator or an unassuming plant, but without them the ecosystem may not survive. Every ecosystem has certain species that are critical to the survival of the other species in the system.

  6. Role of Keystone Species in an Ecosystem - Education

    education.nationalgeographic.org/resource/role-keystone-species-ecosystem

    Invasive species are often ecosystem engineers. Lacking natural predators or a biotic factors to constrain them, these introduced species modify the existing environment in ways that inhibit the growth of the indigenous ecosystem .

  7. People and Invasive Species - Education

    education.nationalgeographic.org/resource/people-and-invasive-species/4th-grade

    An invasive species is an organism that came from somewhere else and can do harm to its new ecosystem. Invasive species can damage native areas, spread diseases, and cause extinctions of other animals.

  8. Educator Spotlight: Finding Solutions for Invasive Species

    blog.education.nationalgeographic.org/2020/02/25/educator-spotlight-finding...

    We agreed on a set of guidelines and then tweaked checkpoints and classroom interactions to suit the needs of our students. Fifteen biology classes took part in the project, with some focusing on invasive species and some adapting the project to address threatened and endangered species.

  9. Generalist and Specialist Species - Education

    education.nationalgeographic.org/resource/generalist-and-specialist-species

    In the field of ecology, classifying a species as a generalist or a specialist is a way to identify what kinds of food and habitat resources it relies on to survive. Generalists can eat a variety of foods and thrive in a range of habitats.

  10. Role of Keystone Species in an Ecosystem - Education

    education.nationalgeographic.org/resource/role-keystone-species-ecosystem/7th...

    A keystone species is an organism that helps define an entire ecosystem. If the keystone species were to disappear from the ecosystem, no other species would be able to fill its environmental role. The ecosystem would be forced to radically change, allowing new and possibly invasive species to take over the habitat.

  11. People and Invasive Species - Education

    education.nationalgeographic.org/resource/people-and-invasive-species/6th-grade

    Invasive species can damage native habitats, spread diseases, cause extinctions, and require a lot of cleanup. But what exactly are they? An invasive species is any living organism that is not native to a particular area. It can cause economic harm or environmental harm to an ecosystem, or it can be damaging to human health.