From 10th to 13th century, Chinese farming in the South China region was increasingly commercialized.
Explanation:
There was a burgeoning increase in trade during that time. This meant that the agriculture of china was at that time
-- commercialized to a great extent making cash crops more than the ones needed for subsistence.
-- using the cash crops and trading with northern china
--use of old tools but with some moderns arrangements like the till.
--use of a manure style that would be copied across the world
--finding of trade networks in collaboration with south east Asia.
-- a network of multi season crops spread across the land.
Answer:
Berton and colleagues (2006) found that the regulation of avoidance behavior in mice confronted by an aversive social target requires BDNF (brain-derived neurotrophic factor) from the: <u>B. vental tegmental area (VTA)</u>.
Explanation:
The vental tegmental area (VTA) is located in the midbrain, this section of the brain contanins different type of neurons. This area is in charge of the reward system, that has to do with the reinforcement behavior.
