2021 Environment - Pollution

Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves within homes 4. Power plants 5. Telephone lines Select the correct answer using the code given below.

• 1, 2, 3 and 5 only
• 1, 2 and 4 only
• 3, 4 and 5 only
• 1, 2, 3, 4 and 5