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.
Sprinkling white vinegar atop a dusting of baking soda is terrific for cleaning sinks, tubs, tile floors and other surfaces. For cleaning, it can be diluted with water as much as 50-50. For the herbicide, it should be used full strength. In all cases, the products to buy in this category are true vinegars made by distilling grain alcohol.