Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
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.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
C4 and CAM photosynthesis compared
Urinometer. In this procedure, a urine sample and urinometer are placed within a tube, and the liqui
Hydronephrosis. Normal kidney (left) and kidney with hydronephrosis (right) are compared. Note the d
Risks of infectious disease increase in (a) high-density agricultural populations compared to (b) lo
Planet Earth compared to all its water and air!
Heat and Cold Stress Compared