8. How many radiosotive things are in the dust in the air that people will braathe, Even with all of this {information {t {ts difficult ta know the amount of radiation a person will receive because we do not know how much of each kind . of food each person eats. than other fooda. Some foods have mora of things that are radiosackive | A person who eats more of the foods that have more of the things that are radioactive will racaive more radiation. A person who eats smaller amounts of these foods will recatve leas radiation, WHY THE PEOPLE WERE ALLOWED TO RETURN TO BIKINI ATOLL In 19_— the Bikini people asked the U.S. government to permit them to return to their homeland. the tests and the The U.S. government cleaned up the scrap left from gaientists measured aoils, water, and fish. the amounts of radioactivity in the From this information they estimated the amounts of radiation that the people might recaiva when they returned. estiuates. ware lower than the standard, the people were allowed Beeause these to return in 1970. In these estimates measureuonts of radioactive things in foodstuffs were | nut possible on the islanda because foad-bearing trees were not present. Estimates of the amount of radioactive things in fruits from thease trees were made from information from other places around thw world. Beeause the sojls of tha Bikini Atoll (and other atolls) area different from soil at thesa other places, it anticipated. was found that the fruits contained more cesium than was In addition, estimates of the amounts of food from these trees. #120 12

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