The hypothesis was that a species from the pacific rim may have been the ancestor of 28 distinct species on the Hawaiian island. Which of these supports this hypothesis and could be the result of observational testing ?

weathering is the answer.

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.