Which factor is often a threat to endangered species?

Poaching is a significant threat to endangered species because it involves the illegal hunting or capturing of animals, often driven by demand for their parts, such as ivory, fur, or body parts used in traditional medicine. This activity directly decreases the population of targeted species, pushing them closer to extinction. Poaching not only removes individual animals from the wild but can also disrupt social structures within species that rely on complex group dynamics for breeding and survival.

In contrast, the other choices focus on positive actions that aim to protect and support endangered species. Habitat conservation refers to efforts to preserve the natural environments where these species live, allowing populations to thrive. Ecological restoration involves rehabilitating damaged ecosystems to provide a more suitable habitat for wildlife, enhancing biodiversity. Environmental education promotes awareness and encourages sustainable practices that can help protect endangered species and their habitats. Each of these factors plays a crucial role in conservation efforts, especially when addressing the threats posed by activities like poaching.