George goes on a deep ocean dive. as he dives deeper into the ocean,

Which factors add to the greenhouse effect and are caused by human activities?

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain