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What do all of the biodiversity hotspots have in common?

To qualify as a biodiversity hotpot, an area must meet two strict criteria: Contain at least 1,500 species of vascular plants found nowhere else on Earth (known as "endemic" species). Have lost at least 70 percent of its primary native vegetation.

Explanation:

Biodiversity hotspots are a method to identify those regions of the world where attention is needed to address biodiversity loss and to guide investments in conservation.

the missing space is phylum