Severe weather forms when certain physical factors are present and interact. A tropical cyclone forms when warm moist air and when combine with which of the following other factors?

A. Cold dense air
B. High pressure system
C. Warm ocean water
D. Wind shear

i think it's c

search in internet u can get it

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.

d. cellulose and starch