What happens in a photic part of a body of water

Light can penetrate this upper level of the water, and photosynthetic organisms can function.

Explanation:

Phytoplankton are found in photic regions of marine biomes. They are primary producers that use the sun as their energy source. The word "photic" itself comes from the root "photo-" meaning light, so that's a good thing to remember if you're confused.

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.