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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.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
![Browning and Gunning demonstrated that placental transfer tissues increase plant reproductive succes](https://biology-forums.com/gallery/47/medium_33_17_07_11_10_52_02.jpeg)
![The firing order is cast or stamped on the intake manifold on most engines that have a distributor ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_6_25_29_298131210.png)