Question

question 20 (5 points)
what does environmental tobacco smoke (ets) encompass?
a) secondhand smoke and sidestream smoke
b) sidestream smoke and mainstream smoke
c) mainstream smoke and secondhand smoke
d) sidestream, mainstream, and secondhand smoke

Explanation:

🆕 New Concept Discovered: Environmental Tobacco Smoke (ETS) Components
Understanding the sources of secondhand smoke.

Step 1: Define Environmental Tobacco Smoke (ETS)

Environmental Tobacco Smoke (ETS), commonly known as secondhand smoke, is the mixture of smoke that enters the air from two distinct sources:

1. Mainstream smoke: The smoke exhaled by a smoker.
2. Sidestream smoke: The smoke that comes directly from the burning end of a cigarette, pipe, or cigar.

Step 2: Match with the Options

Since ETS is defined as the combination of mainstream smoke and sidestream smoke, we look for the option that contains both of these components:

• Option a) includes secondhand smoke (which is another term for ETS itself) and sidestream smoke.
• Option b) correctly identifies the two primary physical components that make up ETS: sidestream smoke and mainstream smoke.
• Option c) includes mainstream smoke and secondhand smoke.
• Option d) lists sidestream, mainstream, and secondhand smoke (which is redundant because secondhand smoke is the combination of the first two).

Therefore, ETS encompasses sidestream smoke and mainstream smoke.

Answer:

b) sidestream smoke and mainstream smoke