Ellie is visiting the grand canyon on her summer vacation. everyone in her tour group marvels at the different rock layers and colors within the canyon. a lot of them are wondering, "why do the layers vary in color? " how could ellie use the scientific inquiry process to find out? check all that apply.

Are there options for this?

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.