✅ Correct Answer: Receptor
Source: This question is taken from the Everyday Science
✅ Correct Answer: Magnetic compass
✅ Correct Answer: Ear Canal
✅ Correct Answer: Away from centre
✅ Correct Answer: both A and B
✅ Correct Answer: Towards the Earth
✅ Correct Answer: Red & Green
✅ Correct Answer: All of these