Fill in the blank(s): Water, food and medicines are characterized as services that ecosystems provide.​

natural?

Explanation: all of those things come from nature-- medicine often comes from plants

not sure if this is what you'r looking for nnew= nold

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.