Because it's easier to scale hustle then relative humidity. and high relative humidity and high precipitation rate are the associates. I should know because I grew up in both greater New Orleans, which is subtropical, and the Oklahoma panhandle, which is semi-arid 5% relative humidity or higher is normal in New Orleans. While 6% relative humidity is relatively familiar in the Oklahoma and Texas panhandles.
Between Europe and America Atlantic Ocean, between America and Asia, Pacific Ocean between Africa and Oceania, Indic ocean
Answer:
Biodiversity hotspots A.K.A Volcanic area
Explanation:
uplift-weathering-erosion-subsidence