There are many foods which r organic ,which type of foods shd buy organic.. and must i store them differently?

The “dirty dozen” is a term used by the Environmental Working Group (EWG) to describe produce most contaminated with pesticides. It includes apples, celery, strawberries, sweet bell peppers, lettuce, cherry tomatoes, potatoes, hot peppers, nectarines and peaches, grapes, cucumbers and kale and collard greens. These are the cases where it’s most useful to buy organic