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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.
The hypothalamus helps regulate body temperature.
Homeostasis is analogous to regulation of temperature via a thermostat.
Setup used to check the opening temperature of a thermostat.
IPCC Temperature Increase Predictions Relative to 1986-2005
How temperature differences generate wind
Variations in Ocean Water Temperature With Depth