nothing
ok how would the earth be like without plate tetonics
That would be, like, "Earth". like, like, really?!
... like Mars.
Like a ball of grass.
The earth would look like it did when it formed
It would be hell on earth.
You would look like a space-hopper filled with liquid.
It would look dead.
we will not learn math at school.
It would be just like it is, the same things would happen with or without seismologists. (just as it would with or without any other humans)
it would be no use of water because without its property then earth would be a water planet
mars is a planet like earth without water