The correct answer is D. gross national product. (I took the test)
Answer:
Dense water sinks below less dense water. This is the principle that drives the deep ocean currents that circulate around the world. A combination of high salinity and low temperature near the surface makes seawater dense enough to sink into the deep ocean and flow along the bottom of the basins.
<u>Answer:</u>
The event of Brexit was when Britain decided to exit from the rest of the European countries. Considering the immigration policy of the Brexit, it decided that it will have the same immigration policy for the European countries like it has for the rest of the countries of the world.
It also decided to cut the number of people entering Britain because it wanted to give more employment opportunities to it's own citizens and reduce other races coming.