When two liquids are mixed in a test tube, a precipitate forms and the test tube feels warms to the touch. How can you describe the reaction based on these observations?

A) exothermic reaction.
B) endothermic reaction.
C) decomposition reaction.
D) neutralization reaction.

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.