Alocal farmer uses chemical fertilizers in his farm. the runoff from the farm pollutes a river which supplies drinking water in the location. this causes serious health problems among people in the location. which of these is the best method to solve this problem?

Change the chemical being used in the fertilizer

Instead of using npk commercial fertilizers that are available in the market, a natural compost can not just improve yield but also prevent soil erosion and pollution that chemical fertilizers can be the cause of. Making the farm more accessible to biological pest control can also make the soil more fertile

Ithink that’s it’s b

Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.