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Magnetite particles, suspected to cause neurodegenerative problems, come from which of these? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves 4. Power plants 5. Telephone lines

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1. Magnetite particles, suspected to cause neurodegenerative problems, come from which of these? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves 4. Power plants 5. Telephone lines

3, 4 and 5 only

1, 2 and 4 only

1, 2, 3, 4 and 5

1, 2, 3 and 5 only

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Magnetite particles, suspected to cause neurodegenerative problems, come from which of these? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves 4. Power plants 5. Telephone lines

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