When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. these warmer rocks rise, while the cooler rocks sink. this movement of warmer and cooler mantle rocks creates pockets of circulation within the mantle called which are thought to be the force behind the movement of tectonic plates over the asthenosphere.

The movement of warmer and cooler mantle rocks creates pockets of circulation within the mantle called convection cells (currents).  The force of the magma movement is thought to move the tectonic plates above.

So the answer is Convection Currents/cells

Brainliest please

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min