6. Which of the following statements are true of the mammalian brain? (1) Of all vertebrates, mammals have the biggest and most complex brain for their body size. (2) The cerebrum controls functions such as memory and learning. (3) The larger the neocortex, the greater the mental abilities of an animal. (4) The area of the neocortex is greatest in humans. a. 1 and 2 b. 3 and 4
c. 1, 2, and 3 d. 1, 2, 3, and 4

the scientific method.

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.