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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

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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.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

Diagrams showing the multiple energy shells and orbitals of a nitrogen atom Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Cambrian trilobite, with a shell made of calcium carbonate. Cambrian trilobite, with a shell made of calcium carbonate.
Morphological differences in shell characteristics and head colouration patterns Morphological differences in shell characteristics and head colouration patterns
If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ... If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ...
Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr
A typical lightning bolt may last for 0.167 s and transfer 1.07 x 10 electrons. Calculate the ... A typical lightning bolt may last for 0.167 s and transfer 1.07 x 10 electrons. Calculate the ...
Video: Conduction of action potentials

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