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.
4. Wash with the acid wash. Dip a scratch-resistant scrub pad or brush into the solution. Apply to the affected aluminum and scrub in circles until the oxidized stain comes off and the aluminum is shiny.luminum is resistant to breakdown because it forms a strong chemical bond with oxygen. This is why aluminum often becomes discolored or dull in appearance. To clean aluminum, acid needs to be used in order to neutralize the buildup of oxidation.