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.
Instruction: Pour the vinegar and place the aluminum foil piece in the pan. Add baking soda. Swirl the pan around so that baking soda gets evenly distributed. While the solution is bubbling, gently rub the stain with the aluminum foil without scratching the panâs surface/finish. Rinse with water and dry thoroughly with dish towel.