Final answer:
The extinction of three tiger species is primarily due to overharvesting and habitat destruction, illustrating human impact on biodiversity. Key drivers include habitat loss, overharvesting, and the introduction of invasive species, exacerbated by deforestation and urbanization.
Step-by-step explanation:
The extinction of three species of tigers due to overharvesting or habitat destruction is an example of the direct impact human activities have on biodiversity. These anthropogenic actions, which include unsustainable resource extraction like overfishing or intensive farming, habitat destruction for land development, and the introduction of exotic species, have led to significant declines in wildlife populations and species extinctions. Habitat loss, overharvesting, and the introduction of invasive species are considered the primary drivers of this loss of biodiversity. Additionally, activities such as unsustainable hunting, deforestation for agriculture or timber, and urban expansion contribute to the degradation of natural habitats, leaving species vulnerable to extinction.