Many radioisotopes undergo alpha decay. They emit an alpha particle (helium nucleus). Write an alpha decay for radon-222. Determine how long it takes for only one eighth of a sample of
radon-222 to remain

answer; /// i do believe that the correct answer is (c)nuclear bond

i believe it is a.) released into

explanation:

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them