What act of congress described general organic principles that organic farmers, ranchers, and food processors must follow?

       It was the Organic Food Production Law. Some of the general principles are: conserve natural resources and biodiversity, organic and processing farms, support the health and welfare of animals, use only approved materials, do not use genetically modified ingredients. These standards cover the product from the farm to the table.    

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.