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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
![Ears pulled back flat against the head with teeth bared and white of the eye showing, indicating ang](https://biology-forums.com/gallery/47/medium_27605_22_04_12_7_16_56.jpeg)
![To examine a child’s ear, the pinna should be pulled back and up for children over 3 years; the pinn](https://biology-forums.com/gallery/47/medium_14755_07_10_12_3_29_39_93452079.jpeg)