Compression refers to the region of high pressure, while rarefaction refers to the region of low pressure.
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The rapid movement of the object creates compressions and rarefactions in the air.
White pleurisy was found Among the employees of cement industry. It is associated with exposure to cement dust, leading to inflammation of the pleura, the membrane lining the lungs and chest cavity. This condition is a recognized occupational hazard among ...
The inventor of the vaccine for smallpox is Edward Jenner. In 1796, Jenner developed the smallpox vaccine, using material from cowpox lesions to inoculate individuals against smallpox, marking a milestone in the history of immunization.
The carrier of Kala-azar is Anopheles mosquito. It transmits the parasitic protozoa Leishmania donovani, which causes the disease. Kala-azar, also known as visceral leishmaniasis, is transmitted to humans through the bite of infected Anopheles mosquitoes.