What weakness does the following question have? how many alligators live in the everglades national park?
.the question cannot be answered with our current technology.
.the question needs to focus more on a relationship instead of just numbers.
.the question is too broad.
.the question is not answerable through observation.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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.