Well according to the test reading it is talking about the seafloor spreading and creating a “new seafloor.” So, to me that says more ocean floor will cover the world than prior (in one hundred years). But to me we would also have to know that there will be enough water to fill it or cover the new floor spreading.
A continental rift is something I think would happen more and more in the next one hundred years and I could see it happening more so in Africa because of the one that has already started to take place. I also think that more and more “Volcanic Formations” will start to surface and take place like the ones off in the Red Sea – To possible form a chain of islands. The reason I think that is because they have already started to form, so clearly the activity is present and in that area since the Red Sea Rift surfaced in 2011.