Which of the following best describes biodiversity hotspots?

Biodiversity hotspots are defined as regions that are not only rich in the variety of species they contain—both flora and fauna—but are also experiencing significant threats to their ecosystems. These areas must have at least 1,500 vascular plant species as endemics, which means they are species that are not found anywhere else in the world. In addition to their rich biodiversity, hotspots are also characterized by high levels of habitat loss, with more than 70% of their original natural vegetation having been converted or destroyed.

This definition underscores the urgency of conservation efforts in these regions, as they play a crucial role in maintaining global biodiversity. Protecting these hotspots is vital because they support a significant percentage of Earth's terrestrial species. Conservation strategies often focus on these areas to ensure the survival of unique species and ecosystems facing the dual pressures of habitat destruction and climate change.

The other options do not align with the specific criteria that define biodiversity hotspots. Regions with minimal human interaction might not necessarily have high biodiversity, while locations known for low biodiversity cannot be classified as hotspots. Places exclusively designated as national parks can exist without being recognized as hotspots if they do not meet the biodiversity criteria. Thus, "areas with high biodiversity facing threats" accurately captures the essence of what biodiversity