Essential Hypertension
The resource that accounts for roughly 90 percent of Botswana's export earnings are diamonds.
Dimonds
Essential hypertension is presence of sustained hypertension (>140/90) mm hg without any presence of disease.
91 percent of all mammals
The classification of about 90 percent of all of the stars would be called the Main Sequence.
I would assume that resource would be crude petroleum.
90%+
Epithelium
90%
90 percent of what?
Yes, all Peace dollars are 90% silver.
90