DNA and RNA (nucleic acids) are polymers of nucleotides that are broken down, first, by pancreatic enzymes and then completed by intestinal brush border enzymes which include phosphatase and .

Nucleosidase

Explanation:

DNA and RNA function as genetic material in organism and proteins are synthesized on the bases of information stored in theses nucleic acids. However as these nucleic acids molecules are present in every cell so they also need to be digested and used as energy source.

c. heat from the poles back down towards the equator.

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.