What are primary ingredients in commercial floral preservatives? What is the function of each in increasing longevity?

to make or become acidic commercial floral preservatives contain acidifiers for reducing the pH level of water and maximizing water uptake effective acidifiers and preservatives include citric acid and aluminum sulfate

so, not gonna do the actual thing because that's just laziness for an easy assignment like this.

but someone that has a lot of information and interesting details about is picasso. you can easily write a 500 word essay about him and how overtime his paintings of himself got more and more deformed representing that he was forgetting what he looked like and that was from memory.