|
|
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
![Comparison of breast cancer and fibrocystic disease. (A) Breast with a malignant tumor growing in th](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_52_25_82592217.jpeg)
![Placenta previa. The condition is caused by the development of the placenta over the cervical canal,](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_29_59_94522485.jpeg)