The independent variable in Experiment III was the A ) treatments used to prevent corrosion . B ) changes made to the shape of the nails. C) time the treated nails were left undisturbed . D) amount of corrosion , rated on a scale of 0 to 5.

the answer is A

Explanation: The independent or manipulated variable in Experiment III was the treatments used to prevent corrosion. The dependent or responding variable was the amount of corrosion, rated on a scale of 0 to 5.

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d