From the reaction of 8g of hydrogen with oxygen, 70g of water have been formed. How much oxygen has been consumed in this reaction?​

this is supposed to be a biological question

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.