During the Spanish Flu Pandemic, why was it thought by some states (New York, Chicago, and New Haven) that students would be better off in school?  Explain and use a quote in your response.  

in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

i wish i could with all of them i can barley see the first one so here's the answer to the first one b