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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Did you know?
Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
Did you know?
There are more bacteria in your mouth than there are people in the world.
![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)
![A client is having an endoscopy performed by a physician who views the upper gastrointestinal intern](https://biology-forums.com/gallery/47/medium_18099_24_10_12_4_35_00.jpeg)