a genetic mutation caused a newt to have faster reflexes. after generations, most of the newt population has the reflex mutation. what most likely caused this change

Newts with the mutation are better able to survive and reproduce than newts without the mutation.

Explanation:

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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.