In an example of a mangrove forest food web, phytoplankton produce 500,000,000 pounds of biomass. alligators are the apex predators in a 5-level trophic pyramid. how many pounds of biomass will the alligators in that mangrove forest receive?

hello so the answer is suppose to be 20 words but idk but its a or b or d or c one of those :)

"a.) well–developed vascular system."

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.