The independent variable is the one we are changing in the experiment. As we change it, the dependent variable might also change.
C. the density of the rock because we are changing the density of the rock and seeing how all other variables change with regards to the density.
Amount Remaining Years #half lives
100g 0 0
50 g 100 1
25g 200 2
Salt=compound, soda=liquid solution, aluminum foil=element, milk=colloid,
steel=solid solution
Hi!
Composition: the way in which a whole is made up
Hope I helped!
Have a nice day!