Answer:
1. The smoke that is inhaled and then exhaled from the smoker's lungs is called mainstream smoke (MS). Sidestream smoke (SS) is the smoke that enters the air directly from the burning end of a cigarette, cigar, or pipe.
2. Cardiovascular diseases are the leading cause of death globally. The second biggest cause are cancers.
The brain is the body's control center. It forms the core of the central nervous system by creating, sending, and processing nerve impulses, thoughts, emotions, physical sensations, and more
Explanation:
