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In a hierarchical model
Smoking Cigarettes
The act of inhaling and exhaling the smoke produced by burning tobacco in rolled paper.
Micronutrients
Essential vitamins and minerals that organisms need in small quantities for proper health and development.
Teratogen
An agent or factor that can cause malformation of an embryo or fetus, leading to birth defects or pregnancy loss.
Environmental Pollutants
Substances that contaminate the natural environment, potentially causing adverse effects on ecosystems and human health.
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