Which species are most threatened globally?

The correct identification of the most threatened species globally includes mammals and birds, as this category encompasses a wide range of influential species facing critical risks. Threats such as habitat loss, climate change, hunting, and pollution significantly impact both mammals and birds, leading to declines in their populations worldwide.

Mammals are often targeted for their fur, tusks, or as game animals, while birds face threats from habitat destruction and illegal trade. According to global conservation assessments, many mammals, such as primates and large carnivores, are particularly vulnerable due to their specific habitat requirements and large ranges. Similarly, bird populations are declining due to the loss of nesting sites and food sources.

While aquatic and terrestrial mammals are indeed threatened, the inclusion of birds in the correct answer emphasizes the broader spectrum of species at risk. Insects and amphibians, while also threatened, have not received as much attention in global conservation efforts compared to mammals and birds, which face more visible and immediate threats that are well-documented. Hence, mammals and birds represent a critical focus in conservation discussions, underscoring their overall vulnerability in the current environmental climate.