What commercially valuable product is harvested from the bark of Quercus suber in Spain?
Answer and explanation
Correct answer: D. cork
- Step 1: According to the official source: Quercus suber ... Typically, once it reaches 25 years old, its thick bark can be harvested for cork every 9 to 12 years without causing harm to the tree. Answer: cork. Why not the others: latex, tannin dye, and maple syrup are raw substances derived from rubber trees or chemical tanning, whereas Quercus suber yields cork.
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