Fatigue is temporary loss of strength and energy resulting from hard physical, MENTAL, or nervous exertion (stress). Hope this helps!
Possibly the answer could be: reliant on, or addicted to
Yes because you can become a health provider and help people get better and find cures for serious diseases like Cancer etc.
aths to children under 5... about 45% I believe
B the most well known chemicals inside cigarettes would includen carbon monoxide and tar.