In some developing nations the percentage of the animal protein from fish in the diet can be as high as

In some developing nations, the percentage of animal protein from fish in the diet can be as high as.

Explanation:10 percent

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 40%.

Explanation:

Fish consumption as a protein source is higher in coastal and developing countries in Asia and Africa compared to developed countries where protein consumption from terrestrial animals is high. In countries such as Bangladesh and Uganda fish consumption accounts for approximately 40% of protein intake in the general population's diet.

they deliver oxygen to the blood

it would be heredity