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Approximately 500,000 babies are born each year in the United States to teenage mothers.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
![Coral reefs, such as this one in the Red Sea, support some of the most diverse assemblages of organi](https://biology-forums.com/gallery/47/medium_33_28_08_11_12_08_58_15741158.jpeg)
![Maps are important tools in political science as they help us see relationships between politics and](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_33_48_221781179.png)