THE FOOD ACTION CAMPAIGN--a creation of the Agribusiness Accountability Project, New Populist Action and Center on Corporate Responsibility--says that consumers can't afford to grow today's crops . . . but that the corporations in the middle are reaping steadily rising profits on the increasingly contaminated, watered-down and adulterated edibles sold in this country. The FAC has the evidence to back its stand and intends to do something--many things--about the situation. To find out how you can help, write to FOOD ACTION CAMPAIGN.