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.
1. Digestive Soother. Likely the most popular use for apple cider vinegar is digestive. I use it as a morning tincture, dissolving a tablespoon into a glass of water to detoxify the digestive system and eliminate toxins from the organs. You can also add a touch of honey if the vinegar is too pungent on its own.