Heat always flows from
a. warmer objects to cooler objects.
b. cooler objects to warmer objects.
c. in a clockwise direction.

warmer objects to cooler objects

When you take two things of different temperature commonly, energy will always be transferred from the hotter to the cooler object. The objects will transfer thermal energy, until the thermal balance is reached, i.e. until their temperatures are even. We state that heat flows from the warmer to the cooler object.

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.