What process are nutrients distributed to the epidermal cells in dugesia?

Dugesia refers to the genus of dugesiid triclads, which comprises some usual representatives of the class Turbellaria. These usual flatworms are observed in the freshwater habitats of Europe, Africa, Asia, the Middle East, and Australia.  

The digestion tract in Dugesia comprises of a central non-pigmented tubular pharynx. The gut of Dugesia comprises three ramified branches like other triclads. Each of the branches contains ceca that distribute the nutrients to the entire body.  

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.