Answer:
The selected text is a question that asks about the source of frankincense essential oil. Frankincense essential oil is derived from the resin of the Boswellia tree, which is found in certain parts of Africa, Asia, and the Middle East12. The resin is harvested from the tree by making incisions in the bark, allowing the resin to seep out and harden into droplets known as "tears"3. These hardened tears are then collected and steam-distilled to produce the concentrated frankincense essential oil
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