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Did you know?
Your heart beats over 36 million times a year.
Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Did you know?
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
Did you know?
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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![Safety glasses should be worn at all times when working on or around any vehicle or servicing any ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_2_44_56_294621851.png)
![Whenever a vehicle is raised off the ground, a safety stand should be placed under the frame, axle, ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_2_57_18_29480919.png)