Changes in color , energy, and odor are indications that a

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

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