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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.
Difficulties in applying the morphological species concept
Competition among Paramecium species.
These species are all at risk of extinction.
A 1998 false-colour near-infrared image of Uranus showing cloud bands, rings, and moons obtained by
Valves in veins open to permit blood flow, close to prevent backflow.
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?