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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.
![Skin structure, including the three layers of the skin and the accessory organs: sweat gland, sebace](https://biology-forums.com/gallery/47/medium_14755_16_09_12_5_57_13_87522080.jpeg)
![Temperature profile of the Uranian troposphere and lower stratosphere. Cloud and haze layers are als](https://biology-forums.com/gallery/47/medium_12359_13_01_13_4_46_29.png)