I would say that the globalization of culture can have the effect of B. Local traditions decline or are lost. For example, where McDonald's comes into a country, with its' take out food, this can work against sitting down and eating together of people and supporting a style of rushed eating on the go on an individual basis.
I think this question is meant to be placed in the Geometry category. :)
There are two main factor that make ocean water more or less dense than about 1027 kg/m3:
The first one. The use of irrigation.
