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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
![Colles’ A break in the distal portion of the radius; often the result of reaching out to cushion a f](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_46_02_89672333.jpeg)
![Drug tolerance: A shift in the dose-response curve to the right as a result of exposure to the drug.](https://biology-forums.com/gallery/30/medium_548020_07_06_17_9_28_55_304431367.png)