How do you separate poppy seeds sand salt iron and benzoic acid?

To separate poppy seeds, sand, salt, iron, and benzoic acid, you can use a combination of physical and chemical methods. First, use a magnet to remove the iron filings. Then, dissolve the salt and benzoic acid in water, filtering out the poppy seeds and sand. Finally, evaporate the water to recover the salt and benzoic acid separately.