Will the Atlantic Ocean close up in a couple million years?
Its difficult to predict what will happen in a couple of million
years, or what you mean by close up ( like going out of business ?)
but right not it is growing due to the constant melting of the
permanent ice pack and the fact that it is now slightly warmer ( 1
degree ) than it was previously means that the water molecules take
up more space also making it larger. It is actually possible that
in the next 1000 years that places like Florida, Washington dc, and
New York will be under water if things continue as they are now.
Reduction in CO2 in our atmosphere is the answer and remember that
the annual plankton bloom produces 300 times more oxygen from CO2
than all the forests on the earth combined.
The current theories on plate movement have the Pacific Ocean
getting smaller and the Atlantic Ocean as growing. Theory has it
that the Atlantic didn't exist, but the continents split and
starting moving away from each other. Now most of the earthquake
activities take place on the Pacific Rim as the large land masses
move toward each other.