What term refers to crops that mainly protect other crops during their early days?
pasture cropsforage cropsnurse crops mainly protects other crops during their early days.
peascornpeanuts is an example of such crops.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

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.