Dr. Snow believed sewage dumped into the river or into cesspools near town wells could contaminate the water supply, leading to a rapid spread of disease. In August of 1854 Soho, a suburb of London, was hit hard by a terrible outbreak of cholera.
The pandemic was the work of a 'super-virus' The 1918 flu spread rapidly, killing 25 million people in just the first six months. ... It's now thought that many of the deaths were due to the development of bacterial pneumonias in lungs weakened by influenza.
The WHO recommends strategies on how to prevent malaria transmission by controlling the mosquito population and on how to diagnose and treat malaria infections. There are two main prevention methods: Protective bed nets treated with long-lasting insecticides prevent bites from malaria-infected mosquitoes and kill them.
Edward Jenner. In 1775 Jenner began to study the relationship between cowpox (a comparatively harmless disease) and the more dangerous and disfiguring smallpox. ... He hypothesized that exposure to cowpox rendered the body immune from smallpox. After nearly twenty years of experiments, he developed the first vaccine.
I don't know how effective the shot was sorry
sources: knarf.english.upenn.edu/People/jenner.html
https://www.greenfacts.org/en/malaria/l-2/2-prevention-treatment-strategies.htm
https://www.smithsonianmag.com/.../ten-myths-about-1918-flu-pandemic-180967810/
www.ph.ucla.edu/epi/snow/snowcricketarticle.html
Avanyu / Awanyu
The Tewa / Tano of Pueblo Native Americans in Rio Grande share the Pueblo culture. Their language is only of five that was spoken by the Pueblo of New Mexico. The Avanyu / Awanyu is believed to be the guardian of water in the form of a horned serpent with curves like water flowing or lightning. The deity is seen drawn on cave walls in New Mexico and Arizona.
Scientists use similarities between organisms to connect them. The similarities and contrasts between fossils discovered in sedimentary rock and living species can be compared.
The right answer is D.
Gene therapy is a method of introducing nucleic acids (DNA or RNA) into the cells of an organism to correct an abnormality, such as a mutation, causing a pathology.
It is often a question of bringing a normal and functional gene (transgene) into a cell where the present gene is altered.
Another method can bring RNA capable of partially regulating or blocking the expression of an altered gene.
