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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
![Chimpanzees in the Gombe National Park, Tanzania groom each other by holding an overhead branch with](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_24_204381261.jpeg)
![The heavily worn, and sometimes cutmarked, anterior teeth of Neadertals suggest that these teeth wer](https://biology-forums.com/gallery/47/medium_273287_22_02_15_10_32_16_2081617.jpeg)