What metric unit would you use for the independent variable mass

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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which three statements are true about all alloys?