|
|
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Everyone has one nostril that is larger than the other.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
The human body produces and destroys 15 million blood cells every second.
![Aerial photo showing the placement of 24 study plots, each 50 m by 50 m, in the Chihuahuan Desert ne](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_28_58_1947116.jpeg)
![Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_18_44_100372029.jpeg)