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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
If you could remove all of your skin, it would weigh up to 5 pounds.
The horizontal fraction bar was introduced by the Arabs.
![Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re](https://biology-forums.com/gallery/47/medium_295860_21_02_15_2_24_36_20693962.jpeg)
![Typical timing marks. The numbers of the degrees are on the stationary plate and the notch is on ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_7_49_58_29858613.png)