|
|
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.
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.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
![Retinopathy. Illustration of a normal retina (left) and a diseased retina (right). The diseased reti](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_36_56_93981716.jpeg)
![A farmer with a pitchfork, wearing a hat identifying him as a Granger, warns of an oncoming “Consoli](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_27_04_22395651.jpeg)
![Poverty rates have declined in the last 50 years, and the biggest decline has been for people 65 and ...](https://biology-forums.com/gallery/27/medium_660366_07_04_17_11_20_47_275071559.jpeg)
![Older people who experienced stressful events in their younger years may show personal growth and ...](https://biology-forums.com/gallery/27/medium_660366_08_04_17_10_05_19_275592249.jpeg)