Sharp reduction in agricultural land has been the negative effect of industrialization in China. This scenario occurs because the development of cities to accommodate high population will give way to more lands that will be used for innovations instead for agriculture/food production. This does not only happen in China but also in other parts of the world where the fast increase in their economic growth is going on a fast rate but there are not enough places to accommodate this specific growth.
As a result, lands that are supposed to be for agriculture are maximized by city construction which in the long term might lead to societal hunger.
Base on the scenario been described in the question, the correct is 2.9 mb, subtracted from
The substraction is because the base station is below or under the sea level and the atmospheric pressure decreases or reduces with the height. I hope this explanation is helpful
