They all use the same set of nucleotides
Answer:
The living conditions were unfair. People owning big industries saw an opportunity to work these immigrants day and night, though they only paid them less then what they deserve (but they didn't know that because they are new to America). Immigrants often didn't have enough money to provide for their families, so many of them were split apart and some children had to work. Because most couldn't pay for housing, many immigrants from the same areas lived in groups so they could help support each other. It was a difficult time for many, and a lot of immigrant workers slept in the factories, for there was no else to go.
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Radioactive isotopes got scattered in the experiment which contained radion, however, the bacteria didn't have a high amount of radiation. You even eat radiation every day. For Example, a banana has approximately 1/1,000,000 sieverts. in order for that radiation to kill you, you would need the radiation of 2 sieverts, or 2 trillion bananas.
A) Sediment builds up over organisms :)