Answer: Those parts is were all the oxygen is distributed through the human body, and so technically it can be considered the respiratory system.
Answer:
Although nicotine is a very addictive substance it's relatively harmless. It's the carbon monoxide, tar and other toxic chemicals in tobacco smoke that will cause serious damage to your health.
Explanation:
The demonstrative adjectives in English are:
<em> This</em>
That
These
Those
critical thinking
