Whales have what seem like remnants of a pelvis and femur, as shown here. mc013-1.jpg what are these structures an example of?

transitional structures
analogous structures
vestigial structures
adapted structures

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

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.