Read the passage and answer the question.
Electronic waste, such as old phones and computers, contains metals like copper and gold, but also harmful substances such as lead and mercury. When such waste is burnt in the open, these poisons enter the air and soil. Recycling in authorised centres recovers valuable metals safely, and many countries now require manufacturers to take back old devices.
What is the passage mainly about?
Answer and explanation
Correct answer: D. The dangers and proper recycling of e-waste
- Step 1: The passage describes the harm of open burning and the benefit of recycling.
Answer
The dangers and proper recycling of e-waste.
Why not the others: The other topics are not discussed.
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