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Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
Chemoautotrophic organisms living around deep-sea hydrothermal vents.
Coelacanth Genes Mapped, "Living Fossil" Evolved Slowly
All living organisms descended from a common ancestral cell
All living apes possess rotating, suspensory shoulders, including humans.
Taxonomy of all living things