The Black Death was an outbreak of bubonic plague that lasted from about 1347 to 1352. The first cures of bubonic plague did not happen until effective antibiotics were develo â¦ ped in the 20th century. Throw sweet smelling herbs onto the fire to clean the air. 2  Carry pockets of sweet-smelling herbs. 3  Plague-proofing homes by putting glazes over southern windows to block the polluted southern wind. 4  Sit in a sewer so the bad air of the plague is driven off by the even worse one of the sewer.
Chemical element. A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, or Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.
About 91 of the 118 elements in the periodic table are metals; the others are nonmetals or metalloids. Some elements appear in both metallic and non-metallic forms. Astrophysicists use the term metal to collectively describe all elements other than hydrogen and helium, the simplest two, in a star.