Biodiversity hotspots: A. house only 10% of all species of vascular plants. B. are home to nearly 20% of the world's population. C. are all located in tropical regions. D. contain few endemic species. E. all of these choices are correct

Biodiversity hotspots are home to nearly 20% of the world's population. Option B is most accurate.

Explanation:

A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation.

Biodiversity hotspots host their diverse ecosystems on just 2.3% of the planet's surface, however, the area defined as hotspots covers a much larger proportion of the land, so much that it hosts about twenty percent of the world's population.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

"a.) well–developed vascular system."