In a closed system containing three different gases as shown, x2 + y2 2xy. choose the two things that must happen as the volume of the system is decreased at constant temperature. 1)the relative concentrations of each gas must change. 2)the concentration of each gas will increase. 3) the relative concentrations of each gas must remain constant. 4)the concentration of each gas will not change.

C,D

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