The structure below would be correctly be classified as a(n) ______. 
Definitions:
Effects of Smoking
The numerous harmful impacts on health caused by smoking tobacco, including respiratory issues, cardiovascular diseases, and increased cancer risk.
Rickettsia Rickettsii
A bacterium that causes Rocky Mountain spotted fever, transmitted by tick bites.
Rocky Mountain Spotted Fever
A bacterial infection transmitted by tick bites, characterized by fever, headache, and a distinctive rash, prevalent in the American Southeast.
Insect Repellent
A substance applied to skin, clothing, or other surfaces to discourage insects from landing or climbing on that surface.
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