Why should I buy organic food & which are the top products that I should choose only organic source

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