The cotton wool is demonstrating how tar 'coats' tissues, like the alveoli in lungs. However, the smoke is being drawn through in one direction - not ventilated like the lungs.
bmartin1970 1 month ago
what represents the lungs?
AamirBux 3 months ago
The cotton wool is demonstrating how tar 'coats' tissues, like the alveoli in lungs. However, the smoke is being drawn through in one direction - not ventilated like the lungs.
bmartin1970 1 month ago
what represents the lungs?
AamirBux 3 months ago