The regions with a high level of species richness, high degree of endemism, and a loss of $70 \%$ of species and habitat are identified as:

Option C: Biodiversity Hotspots

Biodiversity hotspots are regions that are significantly rich in species, especially those endemic or unique to that area, meaning they are not found anywhere else. These regions also experience a substantial loss of their original habitat—typically $70 \%$ or more has been degraded or destroyed. Recognizing these areas is crucial for conservation efforts as they harbor a large number of species that are at risk of extinction.