How can environmental factors affect inheritance

Similarly,drugs,chemicals,temperature and light are among the external environmental factors that can determine Wich genes are turned on and off,thereby influencing the way an organism develops and function.

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.