Great white sharks. Trophic Pyramid Information that is in video: An ecological pyramid (also trophic pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or biomass productivity at each trophic level in a given ecosystem.
The risk is that you may not be able to remove all the acid and if it is left on the metal it will continue to corrode the metal. So to give you a quick answer, you can use vinegar to etch the aluminum, but you have to rinse the surface thoroughly to remove all the acid residue.
Aluminum foil. Metal polish. Pour enough white vinegar onto a clean rag to dampen the cloth. Add a few pinches of salt to the rag. Wipe down copper, brass or steel items with the vinegar and salt mixture to remove dirt and tarnishing. Rinse the items off afterward and thoroughly dry them with a microfiber towel.