Question

question 2 (1 point) which substance in tobacco smoke increases the risk of lung diseases like emphysema and copd? nicotine tar carbon monoxide benzene

Explanation:

Tar in tobacco smoke coats the lungs, damages lung - tissue, and is a major contributor to lung diseases such as emphysema and COPD. Nicotine is addictive but not the main cause of these lung - tissue damages. Carbon monoxide binds to hemoglobin and reduces oxygen transport, and benzene is a carcinogen but not the key substance for emphysema and COPD.

Answer:

Tar