|
|
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.
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 most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
![Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_08_14_1694396.jpeg)
![Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_08_14_1696693.jpeg)
![Key anatomical features of Homo habilis include reduced facial size, a parabolic palate, and some br](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_51_2070597.jpeg)
![Upper Paleolithic stone tools include blade-based tools as seen here being produced from a blade cor](https://biology-forums.com/gallery/47/medium_273287_22_02_15_10_29_17_208012178.jpeg)