That invasive species can change the food web in an ecosystem by destroying or replacing native food sources is a direct threat. TrueFalse

Analysis of the Statement

1. Definition of Invasive Species: Invasive species are organisms that are non-native to a specific location and whose introduction causes or is likely to cause economic or environmental harm or harm to human health.

2. Impact on Food Webs: Invasive species can disrupt local ecosystems by outcompeting native species for resources, such as food and habitat. This can lead to a decline in native species populations.

3. Replacement of Native Species: If an invasive species is able to thrive and replace native species, it can fundamentally alter the composition of the food web, which relies on various interdependent species. Native predators may find it difficult to adapt to the new food sources, leading to further ecological imbalances.

4. Destruction of Food Sources: Some invasive species can directly destroy food sources for native species, either by predation or by consuming resources that natives rely on. For example, zebra mussels in the Great Lakes outcompete native species for food and habitat.

Conclusion

Based on the analysis, the statement is True. Invasive species pose a direct threat to ecosystems by changing food webs through the destruction or replacement of native food sources. This disruption can lead to a cascade of negative effects, ultimately harming biodiversity and ecological stability.