|
|
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.
![Population predictions for 2000–2050, using three different total fertility rates (](https://biology-forums.com/gallery/47/medium_33_02_08_11_12_33_30_13922370.jpeg)
![On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_11_47_16972494.jpeg)